Issue: 19240501

Thursday, May 1, 1924
MAY 1924
5
True
104
Wednesday, December 31, 2014

Articles
cover
0_1
0_1
[no value]
[no value]
Popular Science MONTHLY
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0001.xml
advertisement
0_2
0_2
[no value]
[no value]
Radiola
[no value]
Radiola
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0002.xml
advertisement
1
1
[no value]
[no value]
THE CROSLEY RADIO CORPORATION
[no value]
THE CROSLEY RADIO CORPORATION
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0003.xml
masthead
2
2
[no value]
[no value]
Popular Science Monthly
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0004.xml
article
2
2
[no value]
[no value]
Editorial
Laboratory Tests to Aid You in the Selection of Radio, Tools and Other Equipment
POPULAR SCIENCE MONTHLY
[no value]
[no value]
[no value]
A YOUNG friend of mine stopped in front of a hardware store the other day. “Some of the doors at home stick badly and that’s a fine excuse to get myself a good plane,” he said. “Of course, I could get a carpenter to come around and fix the doors for a couple of dollars, but I’m going to get the plane.
PopularScience_19240501_0104_005_0005.xml
advertisement
3
3
[no value]
[no value]
National Salesmen’s Training Association
[no value]
National Salesmen’s Training Association
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0006.xml
advertisement
4
4
[no value]
[no value]
Advertisements
[no value]
SECURITY PEN CORPORATION
No. 300
SECURITY PEN CORPORATION
No. 400
[no value]
[no value]
PopularScience_19240501_0104_005_0007.xml
advertisement
5
5
[no value]
[no value]
LASALLE EXTENSION UNIVERSITY
[no value]
LASALLE EXTENSION UNIVERSITY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0008.xml
advertisement
6
6,8,12,14,15,17,18,19,21,23,25
[no value]
[no value]
Money Making Opportunities
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0009.xml
advertisement
7
7
[no value]
[no value]
ALLIED MERKE INSTITUTES, Inc.
[no value]
ALLIED MERKE INSTITUTES, Inc.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0010.xml
advertisement
8
8
[no value]
[no value]
CHICAGO AUTO SHOPS
[no value]
CHICAGO AUTO SHOPS
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0011.xml
advertisement
8
8
[no value]
[no value]
RADIO ASSOCIATION OF AMERICA
[no value]
RADIO ASSOCIATION OF AMERICA
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0012.xml
advertisement
9
9
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0013.xml
advertisement
10
10
[no value]
[no value]
C. E. W. Laboratory
[no value]
C. E. W. Laboratory
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0014.xml
advertisement
11
11
[no value]
[no value]
L. L. COOKE
[no value]
L. L. COOKE
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0015.xml
advertisement
12
12
[no value]
[no value]
American School
[no value]
American School
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0016.xml
advertisement
13
13
[no value]
[no value]
Bureau of Inventive Science
[no value]
Bureau of Inventive Science
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0017.xml
advertisement
14
14
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0018.xml
advertisement
15
15
[no value]
[no value]
S & H ENGINEERING CO.
[no value]
S & H ENGINEERING CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0019.xml
advertisement
16
16
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0020.xml
advertisement
17
17
[no value]
[no value]
Associated Electrical Engineers
[no value]
Associated Electrical Engineers
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0021.xml
advertisement
18
18
[no value]
[no value]
American Technical Society
[no value]
American Technical Society
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0022.xml
advertisement
18
18
[no value]
[no value]
WASHINGTON SCHOOL OF CARTOONING
[no value]
WASHINGTON SCHOOL OF CARTOONING
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0023.xml
advertisement
18
18
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0024.xml
advertisement
19
19
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0025.xml
advertisement
19
19
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0026.xml
advertisement
19
19
[no value]
[no value]
FRANKLIN INSTITUTE
[no value]
FRANKLIN INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0027.xml
advertisement
20
20
[no value]
[no value]
University of Applied Science
[no value]
University of Applied Science
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0028.xml
advertisement
20
20
[no value]
[no value]
U. S. School of Music
[no value]
U. S. School of Music
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0029.xml
advertisement
20
20
[no value]
[no value]
THEO. AUDEL & CO.
[no value]
THEO. AUDEL & CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0030.xml
advertisement
20
20
[no value]
[no value]
SHIPMAN-WARD MFG. CO
[no value]
SHIPMAN-WARD MFG. CO
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0031.xml
advertisement
21
21
[no value]
[no value]
Coyne Electrical School
[no value]
Coyne Electrical School
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0032.xml
advertisement
21
21
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0033.xml
advertisement
21
21
[no value]
[no value]
LaSalle Extension University
[no value]
LaSalle Extension University
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0034.xml
advertisement
21
21
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0035.xml
advertisement
22
22
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0036.xml
advertisement
23
23
[no value]
[no value]
CHICAGO AUTOMOTIVE INSTITUTE
[no value]
CHICAGO AUTOMOTIVE INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0037.xml
advertisement
23
23
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0038.xml
advertisement
23
23
[no value]
[no value]
AMERICAN SHOW CARD SYSTEM LTD.
[no value]
AMERICAN SHOW CARD SYSTEM LTD.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0039.xml
advertisement
23
23
[no value]
[no value]
Thee. Audel & Co.
[no value]
Thee. Audel & Co.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0040.xml
advertisement
24
24
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0041.xml
advertisement
25
25
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0042.xml
advertisement
26
26
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0043.xml
tableOfContents
27
27
[no value]
[no value]
In This Issue
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0044.xml
advertisement
27
27
[no value]
[no value]
Advertisement: POPULAR SCIENCE MONTHLY
[no value]
[no value]
POPULAR SCIENCE MONTHLY
[no value]
[no value]
PopularScience_19240501_0104_005_0045.xml
advertisement
28
28
[no value]
[no value]
A. H. GREBE & CO., Inc.: Broadcast Receiver
[no value]
A. H. GREBE & CO., Inc.
Broadcast Receiver
[no value]
[no value]
PopularScience_19240501_0104_005_0046.xml
article
29
29,30,132
[no value]
[no value]
Niagara’s Power from the Tides
[no value]
[no value]
[no value]
René Bache
THE Federal Power Commission at Washington, D. C., now has under consideration a new project for harnessing the tides of the Bay of Fundy, at the northeast corner of the United States. It is said to be the first really practical plan for a large-scale tidepower development in this country.
PopularScience_19240501_0104_005_0047.xml
article
31
31
[no value]
[no value]
Has Our Earth a Second Moon?
[no value]
[no value]
[no value]
Scriven Bolton
IF YOU are interested in popular astronomy and if you own or have access to a small telescope, you have the opportunity of a lifetime to make a momentous discovery, one that might eclipse the discoveries of the world’s greatest observatories.
PopularScience_19240501_0104_005_0048.xml
article
32
32,33
[no value]
[no value]
Your LEGS —Yardsticks of BRAINPOWER The Newest Theory of Intelligence
Four Outstanding Men
How to Test Yourself
[no value]
[no value]
Henry E. Garrett
IF YOU have a small body and long arms and legs, the chances are that you are highly intelligent and will find success in some kind of brain work. If you have a large body and short arms and legs, brain work probably is not your forte, and you would do best to follow some manual trade, or at least a line of work requiring steadiness and accuracy rather than quickness of mind.
PopularScience_19240501_0104_005_0049.xml
article
34
34,35,141
[no value]
[no value]
Storming Earth’s Highest Citadel
Mount Everest’s Desolate Summit a Challenge to Man’s Endurance
[no value]
[no value]
Raymond J. Brown
SOMEWHERE on the Tibetan plains a band of a dozen explorers is pushing forward on the first leg of a most tremendous adventure. They are preparing to storm the loftiest citadel Nature has reared on earth—Mount Everest, whose snow-capped peak rises 29,141 feet above the sea, dwarfing the surrounding mountains of the mighty Himalayas.
PopularScience_19240501_0104_005_0050.xml
article
36
36,37,137,138
[no value]
[no value]
Adventures in Home Ownership
Chapter II—How We Financed Our Purchase
[no value]
[no value]
Phil M. Riley
The story of the first adventures of Jim and Marion Hunter in their search for a ready-built home was told entertainingly by Mr. Riley in last month’s issue. After inspecting a number of houses that offered such objections as careless construction, old age, and undesirable neighborhood, Jim and Marion finally found their heart’s desire, only to discover that the price apparently was beyond their reach.
PopularScience_19240501_0104_005_0051.xml
article
38
38,142
[no value]
[no value]
Does Your Watch Know You?
How to Befriend the Most Temperamental of Mechanical Servants
How to Make Your Watch Keep Good Time
[no value]
[no value]
Samuel Bernard
A FEW weeks ago a young man asked me to examine a large silver watch, a typical railroad man’s watch; an excellent timepiece, too, I knew as soon as I saw it. “I bought this a couple of weeks ago,” he told me, “and I’m afraid I’ve been stung. I got it from a locomotive engineer who lives near me.
PopularScience_19240501_0104_005_0052.xml
article
39
39,40,133,134,135
[no value]
[no value]
Can Science Save a Crowded World?
[no value]
[no value]
[no value]
Lieut.-Comm. Fitzhugh Green
[no value]
PopularScience_19240501_0104_005_0053.xml
article
41
41
[no value]
[no value]
Fun and Profit in Riding Hobbies
Interesting People Who Find Happiness in Unusual Pastimes
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0054.xml
article
42
42,43,136
[no value]
[no value]
A Time Clock on the Honey-Bee
Nature's Most Industrious and Orderly Workers Checked and “Fingerprinted"on Uncle Sam's Bee Farm
[no value]
[no value]
George H. Dacy
UNCLE SAM has become a beekeeper. At Washington, D. C., only a few miles from the White House, the United States Government has established a beefarm where, during every hour of the day and night, the activities of 3,750,000 of the finest Italian bees are watched and studied by a staff of experts.
PopularScience_19240501_0104_005_0055.xml
article
44
44
[no value]
[no value]
Plants, like Animals, Feel Pain
[no value]
[no value]
[no value]
Clifford H. Farr
IF YOU should see some one whip a horse or kick a dog, you would not question for a moment whether the animal felt the blow. But if you pluck a rose, peel a potato, or mow a lawn, you probably never stop to wonder whether the plants know that they have been touched, or whether they feel pain.
PopularScience_19240501_0104_005_0056.xml
article
45
45,46
[no value]
[no value]
"You Can Add 20 Years to Life"
Science, the Physical Auditor,Can Tell You Where to Find Them
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0057.xml
article
47
47
[no value]
[no value]
Useful New Products from Rubber
Shipments of Milky Sap from Plantations May Revolutionize Industry
[no value]
[no value]
Ismar Ginsberg
NEW methods in rubber manufacture and the employment of rubber for many unusual uses are predicted as a result of the recent introduction on the market of rubber latex, the milk-like sap of the rubber tree. This product is not new in the strict sense of the word, for it is the source of rubber as we have known it for many years.
PopularScience_19240501_0104_005_0058.xml
article
48
48
[no value]
[no value]
Where Science Found Egypt’s Treasure
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0059.xml
article
49
49
[no value]
[no value]
Power in the Volcano’s Hot Breath
[no value]
[no value]
[no value]
William J. White
VOLCANOES, which since earliest times have been a symbol of disaster and terror, today are known to scientists and engineers as a source of productive use to man in exactly the same way as are the waterfalls, coal-mines, and oilfields. Science has learned that volcanoes may be tamed and harnessed to work patiently and steadily in the production of power to turn the wheels of industry and to supply man with light and heat for his home and work.
PopularScience_19240501_0104_005_0060.xml
article
50
50,51
[no value]
[no value]
Pathfinders in Science
A Close-Up of Mars—Thought by Radio—The Sky—New Discoveries
A New Blue Sky Theory
Novel Methods of Propulsion
A Remedy for Blood Poison
The Ma Jong Itch
An Oxygen Treatment for Bronchitis
New Explosive and Fertilizer Found
Eggs 40 Million Years Old
Measures Heat of the Distant Stars
[no value]
[no value]
[no value]
IN AUGUST of this year, we shall be within 35,000,000 miles of Mars— merely a three-minute hop for a radio or light wave. Scientists who know more about the geography of this neighboring planet than was known about the surface of the earth only a few hundred years ago, will be on the lookout for new facts when the visitor comes closest this summer.
PopularScience_19240501_0104_005_0061.xml
article
52
52
[no value]
[no value]
Music ]V Shops Adopt “Noiseless” Phonographs
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0062.xml
article
52
52
[no value]
[no value]
Automatic Lubrication for Engine Cylinders
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0063.xml
article
52
52
[no value]
[no value]
Revolving Wood Trimmer Operated by Hand
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0064.xml
article
52
52
[no value]
[no value]
Glue Made from Garlic
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0065.xml
article
52
52
[no value]
[no value]
Pneumatic Auto Wheel Absorbs Road Shocks
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0066.xml
article
52
52
[no value]
[no value]
A Sanitary Wash-Basin for All Hands
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0067.xml
article
53
53
[no value]
[no value]
New Plumb-Bob Designed for Quick Adjustment
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0068.xml
article
53
53
[no value]
[no value]
One-Foot Control for Ford Brake and Clutch
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0069.xml
article
53
53
[no value]
[no value]
The World's Smallest Observation Balloon
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0070.xml
article
53
53
[no value]
[no value]
Standing Crops Measured by Auto Meters
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0071.xml
article
53
53
[no value]
[no value]
Removable Window Sashes to Lighten Housework
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0072.xml
article
54
54
[no value]
[no value]
Move Two-Million-Pound Testing Machine
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0073.xml
article
54
54
[no value]
[no value]
Machine Embosses without Heat, Glue, or Ink
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0074.xml
article
54
54
[no value]
[no value]
A 5000-Mile Stage Line
[no value]
[no value]
[no value]
[no value]
JOURNEYING from coast to coast by motor stage soon may be possible if plans for a 5000-mile stage line from New York City to Los Angeles, Calif., and up the Pacific Coast to Portland, Ore., are carried to completion. The trip, lasting 25 nights and 26 days, would be made in luxurious touring coaches carrying eight passengers beside the driver.
PopularScience_19240501_0104_005_0075.xml
article
54
54
[no value]
[no value]
A Pocket Adding Machine to for Quick Accounting
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0076.xml
article
54
54
[no value]
[no value]
Woman Operates Mammoth Filtration Plant
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0077.xml
article
55
55
[no value]
[no value]
Electric Motor Sharpens Lawnmowers Quickly
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0078.xml
article
55
55
[no value]
[no value]
Four Wheels for Drive, Brake, and Steering
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0079.xml
article
55
55
[no value]
[no value]
-«JLRuns Automatically This Turbine Power Plant
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0080.xml
article
55
55
[no value]
[no value]
Illuminated Mirror Will Make Shaving Easier
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0081.xml
article
55
55
[no value]
[no value]
Making Paper Fireproof
[no value]
[no value]
[no value]
[no value]
PAPER can be made fireproof by saturating it with the following solution: Ammonium sulphate, 8 parts. Boric acid, 3 parts. Borax, 2 parts. Water, 100 parts. A solution of sodium tungstate has the same effect, but is more expensive.
PopularScience_19240501_0104_005_0082.xml
article
56
56
[no value]
[no value]
Small Jack Lifts Huge Trucks
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0083.xml
article
56
56
[no value]
[no value]
Huge Engine Model
[no value]
[no value]
[no value]
[no value]
THE largest oilengined passenger vessel in the world, a twinscrew craft of more than 20,000 tons displacement now under construction in a British shipyard, was made possible by two years of experiment, culminating in a four-month successful operation of the huge single-cylinder model engine, shown at the left.
PopularScience_19240501_0104_005_0084.xml
article
56
56
[no value]
[no value]
Wihistle Sounds a Warning when Gas Runs Low
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0085.xml
article
56
56
[no value]
[no value]
Exhaust Manifold His Cook-Stove
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0086.xml
article
57
57
[no value]
[no value]
Pre-Heating Manifold for Quick Auto Starting
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0087.xml
article
57
57
[no value]
[no value]
Sugar Cane Harvested by
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0088.xml
article
57
57
[no value]
[no value]
The World’s Greatest Water Wheel
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0089.xml
article
57
57
[no value]
[no value]
Old Auto Engine Lights Village
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0090.xml
article
58
58
[no value]
[no value]
Four-Foot Locomotive Pulls Four Persons
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0091.xml
article
58
58
[no value]
[no value]
Radio Set Detects Trouble on Power Lines
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0092.xml
article
58
58
[no value]
[no value]
New Dispensing Valve for the Soda Fountain
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0093.xml
article
58
58
[no value]
[no value]
Nail-Pulling Made Easy by Slip-On Collar
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0094.xml
article
58
58
[no value]
[no value]
Solid Tires Cushioned by Perforations
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0095.xml
article
59
59
[no value]
[no value]
Barling Bomber, World’s Greatest Plane, Soon May Be Surpassed
[no value]
[no value]
[no value]
[no value]
WILL the coming summer see new records in the conquest of the air— surpassing even the amazing feats of airplane construction and operation of a year ago? The giant bomber shown above, designed by Walter H. Barling and successfully tested at McCook Field, Dayton, Ohio, last summer, still retains its place as the largest airplane in the world.
PopularScience_19240501_0104_005_0096.xml
article
59
59
[no value]
[no value]
Manifold Inlet Valve Is Designed to Save Gas
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0097.xml
article
59
59
[no value]
[no value]
Three Wire Legs Safeguard the Creeping Baby
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0098.xml
article
59
59
[no value]
[no value]
Advise Diet of Sea Fish to Prevent Goiter
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0099.xml
article
59
59
[no value]
[no value]
All-Season Door Contains Interchangeable Panels
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0100.xml
article
60
60,61
[no value]
[no value]
Labor-Saving Inventions for the Well-Equipped Household
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0101.xml
article
62
62
[no value]
[no value]
Locomotive on Runners Hauled by Horsepower
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0102.xml
article
62
62
[no value]
[no value]
Wo: Grid’s Largest Insulator Weighs 506 Pounds
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0103.xml
article
62
62
[no value]
[no value]
Form Stops Doors
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0104.xml
article
62
62
[no value]
[no value]
Fishes Heed Noon Whistle
[no value]
[no value]
[no value]
[no value]
ADDITIONAL evidence that fishes are able to hear has been produced by a German scientist. He fed blind fishes to a musical accompaniment. After the sixth day of this treatment, the fishes always came up to the surface when the whistle blew.
PopularScience_19240501_0104_005_0105.xml
article
62
62
[no value]
[no value]
Inexpensive Razor Strop Made of Steel
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0106.xml
article
62
62
[no value]
[no value]
Small Eye-Shades Clipped /to Rims of Glasses
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0107.xml
article
63
63
[no value]
[no value]
Travelers’ Wardrobe Trunk Folds into Small Space
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0108.xml
article
63
63
[no value]
[no value]
New Head Phones for Radio Hang on the Ears
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0109.xml
article
63
63
[no value]
[no value]
/Gearless Auto Is Driven by Compressed Air
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0110.xml
article
63
63
[no value]
[no value]
Ink Cartridges to Insure a Full Fountain Pen
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0111.xml
article
63
63
[no value]
[no value]
Charcoal Gas Drives Auto
[no value]
[no value]
[no value]
[no value]
AN AUTOMOBILE propelled by gas generated from the combustion of charcoal was tested recently in Lyons, France, before government officials and technical experts. The machine is reported to have traveled 60 miles on 33 pounds of charcoal costing 25 cents, or one fourth the cost of gasoline.
PopularScience_19240501_0104_005_0112.xml
article
63
63
[no value]
[no value]
Cane Holds Baby Carriage
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0113.xml
article
64
64
[no value]
[no value]
Rubber Heart Beats in Lifelike Model Cow
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0114.xml
article
64
64
[no value]
[no value]
Projector Shows Pictures in Three Dimensions
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0115.xml
article
64
64
[no value]
[no value]
Offers Plan to Forecast and Chart Earthquakes
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0116.xml
article
64
64
[no value]
[no value]
Four-Inch African Locust Feeds on Mice
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0117.xml
article
64
64
[no value]
[no value]
Mammoth Lens Made for Movies of Mars
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0118.xml
article
65
65
[no value]
[no value]
A Creature Four Hundred Million Years Old
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0119.xml
article
65
65
[no value]
[no value]
Deny Increase in Insanity
[no value]
[no value]
[no value]
[no value]
THAT alcoholic insanity has increased since prohibition is emphatically denied in a bulletin of the National Committee for Mental Hygiene, which states that as compared with 1919, the year 1922 shows a decrease in mental cases from this cause.
PopularScience_19240501_0104_005_0120.xml
article
65
65
[no value]
[no value]
The World’s Tallest Cabbage
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0121.xml
article
65
65
[no value]
[no value]
Electric Pump Is Victor over Diphtheria
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0122.xml
article
65
65
[no value]
[no value]
New Turkey May Add Zest to Thanksgiving
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0123.xml
article
65
65
[no value]
[no value]
The Strongest Crate Made with the Least Lumber
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0124.xml
article
66
66
[no value]
[no value]
Auto Sidelight to Assure Safe Clearance
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0125.xml
article
66
66
[no value]
[no value]
Aluminum Tripod Gives Cushioning Support
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0126.xml
article
66
66
[no value]
[no value]
Hot Plugs Aid Starting
[no value]
[no value]
[no value]
[no value]
ONE reason why an automobile engine is more apt to balk when starting than after a period of continuous running has been determined by Dr. F. B. Silsbee, of the United States Bureau of Standards for the National Committee for Aeronautics. He has found that the ignition spark will pass more readily when one or both of the electrodes are heated to redness.
PopularScience_19240501_0104_005_0127.xml
article
66
66
[no value]
[no value]
Illuminated Display Shows Secrets of Radio
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0128.xml
article
66
66
[no value]
[no value]
Cigarette Box and Stand
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0129.xml
article
66
66
[no value]
[no value]
Motorized Platform Replaces Switch Engine
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0130.xml
article
67
67
[no value]
[no value]
Fiber Needles Sharpened on the Phonograph
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0131.xml
article
67
67
[no value]
[no value]
Drowning Mouse Sets Trap for Others
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0132.xml
article
67
67
[no value]
[no value]
Check Signatures Transmitted by Telegraph
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0133.xml
article
67
67
[no value]
[no value]
Pictures Biblical Stories in Grotto of Rocks
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0134.xml
article
68
68
[no value]
[no value]
Mammoth Machine Harvests 300 Bushel Clover Seed an Hour
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0135.xml
article
68
68
[no value]
[no value]
Bumper Stops the Car that Strikes Pedestrian
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0136.xml
article
68
68
[no value]
[no value]
Galoshes Tied in a Second by Pulling a Tab
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0137.xml
article
68
68
[no value]
[no value]
Arrow Poison for Insects
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0138.xml
article
68
68
[no value]
[no value]
Phone Wires Cross Lake on Pontoon Poles
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0139.xml
article
68
68
[no value]
[no value]
An Elastic Belt Buckle
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0140.xml
article
69
69
[no value]
[no value]
World's Greatest Loudspeaker Four Miles Away
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0141.xml
article
69
69
[no value]
[no value]
Autc utomatic Traffic Signal Has Bell and Lights
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0142.xml
article
69
69
[no value]
[no value]
Writing Aid for the Blind
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0143.xml
article
69
69
[no value]
[no value]
Engineer’s Shovel “Rings Up” Weight of Coal
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0144.xml
article
69
69
[no value]
[no value]
Electric Soldering-Iron the Size of a Pencil
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0145.xml
article
70
70
[no value]
[no value]
Airplanes to Fly around the World
[no value]
[no value]
[no value]
[no value]
A 27,000-mile flight around the world by four U. S. Army aviators—the most ambitious aeronautical adventure ever undertaken—will be in progress by the time this magazine is read. Those in charge hope to accomplish the feat in about four months.
PopularScience_19240501_0104_005_0146.xml
article
70
70
[no value]
[no value]
Airplane Photographs Measure Crop Areas
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0147.xml
article
71
71
[no value]
[no value]
Queen of Dirigibles Ready for U.S.
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0148.xml
article
71
71
[no value]
[no value]
Amundsen’s Polar Flight To Be for Norway
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0149.xml
article
71
71
[no value]
[no value]
How Much Science Do You Know?
[no value]
[no value]
[no value]
[no value]
IN THE simplest, most obvious, every-day happenings often lie hidden the most fascinating scientific facts, wholly unknown to you. The knowledge of one apparently commonplace fact about the hidden forces of nature often becomes a skeleton key to open many doors of scientific understanding, that will stimulate your mind, give you confidence, and win the respect of others.
PopularScience_19240501_0104_005_0150.xml
article
72
72,73
[no value]
[no value]
Spring Painting—Inside and Out
[no value]
[no value]
[no value]
N. M. Collart
PAINTING—to a person who never has done any—probably appears to be the simplest work in the world. In a way, that is correct. The mere act of dipping a brush into a can and covering a surface can be done in a more or less satisfactory manner by any one after a little practice.
PopularScience_19240501_0104_005_0151.xml
article
74
74,139,140
[no value]
[no value]
A Universal Radio Tuning Unit
How to Make a Combination Inductance for always Any Hook-Up
[no value]
[no value]
Joseph Calcaterra
[no value]
PopularScience_19240501_0104_005_0152.xml
article
75
75,76
[no value]
[no value]
How to Select Your Radio Parts
One Defective Unit Will Spoil the Best Hook-Up
The Latest Development in Radio
[no value]
[no value]
Jack Binns
A RADIO set is no better than the poorest part in it! This is as true as the fact that no chain is stronger than its weakest link. No matter how well a receiver may be designed, constructed, and wired, it never will function satisfactorily if one defective part is employed in it.
PopularScience_19240501_0104_005_0153.xml
article
77
77
[no value]
[no value]
The Latest Oddities in Motor Cars
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0154.xml
article
78
78
[no value]
[no value]
Look to Your Steering-Gear!
The Most Vital Point of Your Car Is the Most Neglected
Know Your Car
[no value]
[no value]
F. A. Platte
MOST have experienced motorists the feeling of helplessness that comes when a car skids suddenly on a slippery pavement. But there is another way in which your car may get out of control that contains more dangerous possibilities than skidding.
PopularScience_19240501_0104_005_0155.xml
article
79
79
[no value]
[no value]
New Accessories for the Autoist
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0156.xml
article
80
80
[no value]
[no value]
Automobile Ideas that Save Money
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0157.xml
article
81
81,121,122
The Home Workshop
[no value]
How to Build Ornamental Trellis-Work
[no value]
[no value]
[no value]
Arthur Wakeling
ORNAMENTAL affords a happy solution trellis-work for the home worker who wishes to use the lengthening daylight of spring evenings to improve the appearance of his house and garden. He very easily can take a leaf out of the notebook of architects, who often use well-designed and carefully placed trellises to give an added touch of beauty to already finely proportioned residences.
PopularScience_19240501_0104_005_0158.xml
article
82
82
The Home Workshop
[no value]
Speedy Toy Motorboat Built from Old Crate
[no value]
[no value]
[no value]
E. B.
[no value]
PopularScience_19240501_0104_005_0159.xml
article
82
82
The Home Workshop
[no value]
Simple Repair Tricks that Triple the Life of a Canoe
[no value]
[no value]
[no value]
E. E. SCOTT
[no value]
PopularScience_19240501_0104_005_0160.xml
advertisement
83
83
[no value]
[no value]
S. C. JOHNSON & SON: WOOD DYE
[no value]
S. C. JOHNSON & SON
WOOD DYE
[no value]
[no value]
PopularScience_19240501_0104_005_0161.xml
article
84
84
The Home Workshop
[no value]
Making Your Spark Plugs Last 28,000 Miles
[no value]
[no value]
[no value]
Ray F. Kuns
[no value]
PopularScience_19240501_0104_005_0162.xml
article
84
84
The Home Workshop
[no value]
Ornamental Giraffe Upholds Ashtray
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0163.xml
article
84
84
The Home Workshop
[no value]
How to Re-Thread Worn Nuts and Screws
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0164.xml
advertisement
85
85
[no value]
[no value]
NATIONAL CARBON COMPANY, INC.: EVEREADY Radio Batteries
[no value]
NATIONAL CARBON COMPANY, INC.
EVEREADY Radio Batteries
[no value]
[no value]
PopularScience_19240501_0104_005_0165.xml
article
86
86,94,96,98
Better Shop Methods
[no value]
Die-Making Simplified for Every Machinist
[no value]
[no value]
[no value]
S. A. McDonald
JOHN SMITH, able machinist, mayhave some misgivings when confronted with a punch-and-die job, as to his ability to do the fine work he sees the experienced die-maker perform. He may not realize that a first-class machinist does just as fine work, using the same machines, tools, and measuring instruments, as the die-maker.
PopularScience_19240501_0104_005_0166.xml
advertisement
87
87
[no value]
[no value]
THE L S STARRETT CO
[no value]
THE L S STARRETT CO
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0167.xml
advertisement
88
88
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0168.xml
article
88
88
Better Shop Methods
[no value]
Holder for Drilling and Turning in One Operation
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0169.xml
article
88
88
Better Shop Methods
[no value]
Making a Gromet Punch
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0170.xml
advertisement
89
89
[no value]
[no value]
Chevrolet Motor Company
[no value]
Chevrolet Motor Company
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0171.xml
advertisement
90
90
[no value]
[no value]
BROWN & SHARPE MFG. CO.
[no value]
BROWN & SHARPE MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0172.xml
article
90
90
Better Shop Methods
[no value]
Relieving Milling Cutters on an Ordinary Lathe
[no value]
[no value]
[no value]
John Aures
[no value]
PopularScience_19240501_0104_005_0173.xml
article
90
90
Better Shop Methods
[no value]
Marking Wood with Try-Square
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0174.xml
article
90
90
Better Shop Methods
[no value]
Brazing Bandsaws
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0175.xml
advertisement
91
91
[no value]
[no value]
Music Master RADIO REPRODUCER
[no value]
Music Master RADIO REPRODUCER
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0176.xml
advertisement
92
92
[no value]
[no value]
SIMONDS SAW AND STEEL CO.: SAWS FILES KNIVES STEEL
[no value]
SIMONDS SAW AND STEEL CO.
SAWS FILES KNIVES STEEL
[no value]
[no value]
PopularScience_19240501_0104_005_0177.xml
article
92
92
Better Shop Methods
[no value]
How Would You Solve This Problem in Foremanship?
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0178.xml
article
92
92
Better Shop Methods
[no value]
Cutting-Off Lathe Tool
[no value]
[no value]
[no value]
S. L. ROBERTS
[no value]
PopularScience_19240501_0104_005_0179.xml
article
92
92
Better Shop Methods
[no value]
Ball-Turning Tool
[no value]
[no value]
[no value]
H. W.
[no value]
PopularScience_19240501_0104_005_0180.xml
advertisement
93
93
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0181.xml
advertisement
94
94
[no value]
[no value]
NICHOLSON FILES
[no value]
NICHOLSON FILES
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0182.xml
advertisement
95
95
[no value]
[no value]
Tycos Temperature Instruments
[no value]
Tycos Temperature Instruments
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0183.xml
advertisement
96
96
[no value]
[no value]
Remington Arms Company, Inc.: Remington Knives
[no value]
Remington Arms Company, Inc.
Remington Knives
[no value]
[no value]
PopularScience_19240501_0104_005_0184.xml
advertisement
97
97
[no value]
[no value]
Mathias KLEIN & Sons: KLEIN PLIERS
[no value]
Mathias KLEIN & Sons
KLEIN PLIERS
[no value]
[no value]
PopularScience_19240501_0104_005_0185.xml
advertisement
98
98
[no value]
[no value]
GOODELL-PRATT COMPANY: Bench Drill
[no value]
GOODELL-PRATT COMPANY
Bench Drill
[no value]
[no value]
PopularScience_19240501_0104_005_0186.xml
article
98
98
Better Shop Methods
[no value]
Lathe Carriage Feeds Drill
[no value]
[no value]
[no value]
F. J. W.
[no value]
PopularScience_19240501_0104_005_0187.xml
advertisement
99
99
[no value]
[no value]
COLGATE &. CO.
[no value]
COLGATE &. CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0188.xml
advertisement
100
100
[no value]
[no value]
The Caille Perfection Motor Co.: Rowboat Motors
[no value]
The Caille Perfection Motor Co.
Rowboat Motors
[no value]
[no value]
PopularScience_19240501_0104_005_0189.xml
article
100
100
Better Shop Methods
[no value]
Simple Inspection Gage for Testing Thread Sizes
[no value]
[no value]
[no value]
George A. Luers
[no value]
PopularScience_19240501_0104_005_0190.xml
article
101
101
Better Shop Methods
[no value]
Indicating Depth Gage Shows Amount of Error Automatically
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0191.xml
article
101
101
Better Shop Methods
[no value]
Lathe Chuck Adapter
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0192.xml
article
101
101
Better Shop Methods
[no value]
Bending Pipes by Hand
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0193.xml
advertisement
101
101
[no value]
[no value]
THE PALMOLIVE COMPANY: PALMOLIVE SHAVING CREAM
[no value]
THE PALMOLIVE COMPANY
PALMOLIVE SHAVING CREAM
[no value]
[no value]
PopularScience_19240501_0104_005_0194.xml
advertisement
102
102
[no value]
[no value]
Remington Typewriter Company: REMINGTON PORTABLE
[no value]
Remington Typewriter Company
REMINGTON PORTABLE
[no value]
[no value]
PopularScience_19240501_0104_005_0195.xml
article
102
102
Better Shop Methods
[no value]
Feeler Block Gage for Setting Straddle Milling Cutters
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0196.xml
article
102
102
Better Shop Methods
[no value]
Calipering Holes while Boring
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0197.xml
article
102
102
Better Shop Methods
[no value]
Compressed-Air Whistle Used for Factory Call System
[no value]
[no value]
[no value]
[no value]
AN EFFECTIVE factory call system can be installed cheaply in any plant that uses an ordinary air compressor. On the compressor is mounted a small whistle of the kind often used on automobile trucks. A rope leads from the whistle in the shop to a position convenient to the man in the office who greets callers.
PopularScience_19240501_0104_005_0198.xml
article
103
103
Better Shop Methods
[no value]
Vise Used in Lapping Hardened Steel Rods and Pins
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0199.xml
article
103
103
Better Shop Methods
[no value]
Globe Valve Seat Grinder
[no value]
[no value]
[no value]
[no value]
A TOOL for refacing the brass seats of common types of globe valves can be made as illustrated for a few cents in half an hour. It serves fairly well in place of special tools, which in the larger sizes are quite expensive. Remove the composition or metal disk from its holder and fill the space with a paste of thin glue and emery powder, using as much powder as the glue will take up.
PopularScience_19240501_0104_005_0200.xml
advertisement
103
103
[no value]
[no value]
THE BLACKS DECKER MFO.CO.: PORTABLE ELECTRIC DRILL
[no value]
THE BLACKS DECKER MFO.CO.
PORTABLE ELECTRIC DRILL
[no value]
[no value]
PopularScience_19240501_0104_005_0201.xml
advertisement
104
104
[no value]
[no value]
THE J. B. WILLIAMS COMPANY
[no value]
THE J. B. WILLIAMS COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0202.xml
advertisement
104
104
[no value]
[no value]
Gilson Slide Rule Co.
[no value]
Gilson Slide Rule Co.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0203.xml
advertisement
104
104
[no value]
[no value]
FOLEY SAW-TOOL CO.
[no value]
FOLEY SAW-TOOL CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0204.xml
advertisement
104
104
[no value]
[no value]
W. & J. Boice
[no value]
W. & J. Boice
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0205.xml
article
104
104
Better Shop Methods
[no value]
Radii Center Finder Speeds Up Mechanical Drawing
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0206.xml
article
104
104
Better Shop Methods
[no value]
Fitting a Swivel Base to a Plain Bench Vise
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0207.xml
article
104
104
Better Shop Methods
[no value]
Chip Blower for Deep Holes
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0208.xml
advertisement
105
105
[no value]
[no value]
THE VLCHEK TOOL COMPANY: VLCHEK TOOLS
[no value]
THE VLCHEK TOOL COMPANY
VLCHEK TOOLS
[no value]
[no value]
PopularScience_19240501_0104_005_0209.xml
advertisement
106
106
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0210.xml
article
106
106,107
Better Shop Methods
[no value]
Toolmaker’s Accurate Hand Vise Has Renewable Threads
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0211.xml
article
107
107
Better Shop Methods
[no value]
Holding Studs Securely
[no value]
[no value]
[no value]
[no value]
STUDS with wingnuts that are constantly in use, as on jigs and fixtures, soon work loose, even if pinned in place. The following are two methods I use to keep the studs tight: In heavy material, drill a hole into the end of the stud about half the stud’s diameter and an equal depth, and countersink the hole.
PopularScience_19240501_0104_005_0212.xml
article
107
107
Better Shop Methods
[no value]
Grinding Wrench Jaws
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0213.xml
advertisement
107
107
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0214.xml
advertisement
108
108
[no value]
[no value]
MOTOR TOOL SPECIALTY CO.
[no value]
MOTOR TOOL SPECIALTY CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0215.xml
article
108
108
Better Shop Methods
[no value]
Attractive Rocking-Chair Easily Made
[no value]
[no value]
[no value]
Stanley W. Blanchard
[no value]
PopularScience_19240501_0104_005_0216.xml
article
108
108
Better Shop Methods
[no value]
Friction Tape Serves as Belt for Small Motor
[no value]
[no value]
[no value]
F. H. HERTZLER
[no value]
PopularScience_19240501_0104_005_0217.xml
article
109
109,110
Better Shop Methods
[no value]
Home Workshop Sewing Table Maintains Its Popularity
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0218.xml
advertisement
109
109
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0219.xml
advertisement
109
109
[no value]
[no value]
THE MIDWEST RADIO COMPANY
[no value]
THE MIDWEST RADIO COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0220.xml
advertisement
110
110
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0221.xml
advertisement
110
110
[no value]
[no value]
Hoe Corporation
[no value]
Hoe Corporation
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0222.xml
advertisement
110
110
[no value]
[no value]
The Parks Ball Bearing Machine Company
[no value]
The Parks Ball Bearing Machine Company
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0223.xml
article
110
110
Better Shop Methods
[no value]
A Portable Electric Lamp Hung from the Picture Molding
[no value]
[no value]
[no value]
[no value]
TO INCREASE the usefulness of your portable wall lamp, get a length of hard wood 1 in. square and 5 ft. long, stain and finish as desired, attach a modified picture hook at one end, and suspend from the picture molding. Clamp the portable light at any height desired and carry the cord up through a cup-hook screwed to the top end of stick and continue over to the electrolier.
PopularScience_19240501_0104_005_0224.xml
article
111
111
Better Shop Methods
[no value]
Glass Protects Radio Condenser from Dust and Moisture
[no value]
[no value]
[no value]
ROBERT P. BROOKS
TO THE radio experimenter a glassinclosed condenser is invaluable. An ordinary radio condenser can be converted into one of the inclosed type with nothing more than a 1or 1½-quart jar and an old phonograph record. The top of the jar is cut off by wetting a fairly heavy piece of cord in alcohol, tying it around the jar at the point where it is to be cut, setting fire to the cord and, when the flame has reached its height, plunging the jar into a bucket of cold water.
PopularScience_19240501_0104_005_0225.xml
article
111
111
Better Shop Methods
[no value]
Oilcan Makes Serviceable Lamp and Blowtorch
[no value]
[no value]
[no value]
T. F. DUNFORD
To MAKE an alcohol lamp and blowtorch for soldering, cut the spout from an oilcan where indicated by the dotted lines in the accompanying illustration so as to leave about ¾ in. of the spout attached to the can. Cut off the tip of the spout and close the lower end with solder.
PopularScience_19240501_0104_005_0226.xml
advertisement
111
111
[no value]
[no value]
SARGENT & COMPANY
[no value]
SARGENT & COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0227.xml
advertisement
111
111
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0228.xml
advertisement
111
111
[no value]
[no value]
FERRY & CO.
[no value]
FERRY & CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0229.xml
advertisement
112
112
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0230.xml
article
112
112
Better Shop Methods
[no value]
Conveniences for the Home Garage Made from Oilcans
[no value]
[no value]
[no value]
G. A.
[no value]
PopularScience_19240501_0104_005_0231.xml
article
113
113
Better Shop Methods
[no value]
Gas-Heater Control Operated from Floor Above
[no value]
[no value]
[no value]
N. W. HOPKINS
[no value]
PopularScience_19240501_0104_005_0232.xml
article
113
113
Better Shop Methods
[no value]
Cutting Slots in Thin Metal
[no value]
[no value]
[no value]
WILLIAM J. EDMONDS
A SLOT in thin metal often can be cut quickly by bending the piece around a wooden form held in a vise, as shown, and using a hacksaw. After the two loi cuts are made, the piece is flattened and the ends of the slot cut with a cold chisel. The edges are then trimmed with a file.
PopularScience_19240501_0104_005_0233.xml
advertisement
113
113
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0234.xml
advertisement
113
113
[no value]
[no value]
The W. L. Evans School of Cartooning
[no value]
The W. L. Evans School of Cartooning
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0235.xml
advertisement
114
114
[no value]
[no value]
The Peck, Stow & Wilcox Co.: PEXTO TOOLS
[no value]
The Peck, Stow & Wilcox Co.
PEXTO TOOLS
[no value]
[no value]
PopularScience_19240501_0104_005_0236.xml
article
114
114
Better Shop Methods
[no value]
Brick Base Insures Fine Flower Beds
[no value]
[no value]
[no value]
G. A. L.
SMALL ornamental flower-beds prepared by amateur gardeners often fail to develop satisfactorily because of the poverty of the soil. Simply removing the earth from the flower-beds and replacing it with rich dirt is not always sufficient, as the adjacent or under earth quickly impoverishes the new soil.
PopularScience_19240501_0104_005_0237.xml
article
114
114
Better Shop Methods
[no value]
Small Condensers Aid Your Radio Set
[no value]
[no value]
[no value]
[no value]
THE proper placing of a fixed condenser often will make the difference between good and poor radio reception. When a one-tube regenerative set is used, there is often no need for a fixed condenser across the phones to by-pass the high-frequency current flowing in the plate circuit around the high resistance to these currents offered by the phone windings.
PopularScience_19240501_0104_005_0238.xml
article
114
114
Better Shop Methods
[no value]
Slip-Cover Keeps Dust from Radio Receiving Set
[no value]
[no value]
[no value]
DAVID COUTTS
STANDING idle much of the time, the ordinary radio cabinet and panel constantly are in need of dusting. The polished surfaces seem natural dust collectors. This can be overcome by making a slip cover of imitation leather or cloth similar to one used for a typewriter.
PopularScience_19240501_0104_005_0239.xml
advertisement
115
115
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0240.xml
advertisement
115
115
[no value]
[no value]
THE MONARCH MACHINE TOOL CO.
[no value]
THE MONARCH MACHINE TOOL CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0241.xml
advertisement
115
115
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0242.xml
article
115
115
Better Shop Methods
[no value]
Glass Push Pins Serve as Knobs for Smaller Drawers
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0243.xml
article
115
115
Better Shop Methods
[no value]
Punching Holes in Sheet Metal
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0244.xml
article
115
115
Better Shop Methods
[no value]
^Linoleum Table Tops
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0245.xml
advertisement
115
115
[no value]
[no value]
PRENTISS VISE COMPANY
[no value]
PRENTISS VISE COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0246.xml
advertisement
116
116
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0247.xml
article
116
116
Better Shop Methods
[no value]
Indirect Illumination at Bench Prevents Eye Strain
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0248.xml
article
116
116
Better Shop Methods
[no value]
Repairing a Garden Hose
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0249.xml
article
117
117
Better Shop Methods
[no value]
Flexible Tube Keeps Phone Cords from Kinking
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0250.xml
article
117
117
Better Shop Methods
[no value]
Library Lamp Loudspeaker
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0251.xml
article
117
117
Better Shop Methods
[no value]
Ring Clip Adjusts Length of Electric Drop Cord
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0252.xml
advertisement
117
117
[no value]
[no value]
The B.V.D. Company, inc.
[no value]
The B.V.D. Company, inc.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0253.xml
advertisement
117
117
[no value]
[no value]
FIREITE COMPANY
[no value]
FIREITE COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0254.xml
advertisement
117
117
[no value]
[no value]
WORLD BATTERY CO.
[no value]
WORLD BATTERY CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0255.xml
advertisement
118
118
[no value]
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0256.xml
advertisement
118
118
[no value]
[no value]
THE FRANCE MFC. CO.
[no value]
THE FRANCE MFC. CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0257.xml
advertisement
118
118
[no value]
[no value]
BUESCHER BAND INSTRUMENT CO.
[no value]
BUESCHER BAND INSTRUMENT CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0258.xml
advertisement
118
118
[no value]
[no value]
Ortho Institute
[no value]
Ortho Institute
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0259.xml
article
118
118,119
Better Shop Methods
[no value]
Home Workshop Chemistry
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0260.xml
advertisement
119
119
[no value]
[no value]
Marshall Stillman Association
[no value]
Marshall Stillman Association
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0261.xml
advertisement
119
119
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0262.xml
advertisement
119
119
[no value]
[no value]
The Veeder Mfg. Co.
[no value]
The Veeder Mfg. Co.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0263.xml
advertisement
120
120
[no value]
[no value]
C. A. SHALER CO.
[no value]
C. A. SHALER CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0264.xml
article
120
120
[no value]
[no value]
Centering Small Lathe Work Exactly
[no value]
[no value]
[no value]
Howard Greene
[no value]
PopularScience_19240501_0104_005_0265.xml
article
120
120
[no value]
[no value]
Drawing Board Attachment Saves Tracings from Being Creased
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0266.xml
advertisement
121
121
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0267.xml
advertisement
121
121
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0268.xml
advertisement
121
121
[no value]
[no value]
NORTH BROS. MFG. CO.
[no value]
NORTH BROS. MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0269.xml
advertisement
122
122
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0270.xml
article
123
123
[no value]
[no value]
Enlarging Outfit Is Mounted on Door to Save
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0271.xml
article
123
123
[no value]
[no value]
Mercury Is Used in Making Unique Adjustable Grid Leak
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0272.xml
advertisement
123
123
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0273.xml
advertisement
124
124
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0274.xml
advertisement
124
124
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0275.xml
advertisement
124
124
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0276.xml
article
124
124
[no value]
[no value]
Neat Bedside Stand Requires Less Space than Table
[no value]
[no value]
[no value]
A. E. E.
[no value]
PopularScience_19240501_0104_005_0277.xml
article
124
124
[no value]
[no value]
Holding Awkward Work in a Machinist’s Vise
[no value]
[no value]
[no value]
CAPT. E. A. McCANN
[no value]
PopularScience_19240501_0104_005_0278.xml
article
125
125
[no value]
[no value]
Grip Nut with Concave Face Locks Setscrew Tightly
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0279.xml
article
125
125
[no value]
[no value]
Phonograph Needle Tool Will Remove Bloom from Rubber
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0280.xml
article
125
125
[no value]
[no value]
Drilling at an
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0281.xml
advertisement
125
125
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0282.xml
advertisement
126
126
[no value]
[no value]
LACEY & LACEY
[no value]
LACEY & LACEY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0283.xml
article
126
126,127
[no value]
[no value]
The Shipshape Home
[no value]
[no value]
[no value]
A. M. SMYTH
[no value]
PopularScience_19240501_0104_005_0284.xml
advertisement
127
127
[no value]
[no value]
CLARENCE A. O'BRIEN
[no value]
CLARENCE A. O'BRIEN
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0285.xml
article
128
128
[no value]
[no value]
Flooring Strips Used in Building Neat Radio Antenna Mast
[no value]
[no value]
[no value]
H. G.
[no value]
PopularScience_19240501_0104_005_0286.xml
article
128
128
[no value]
[no value]
Soldering Small Objects
[no value]
[no value]
[no value]
E. A. M.
[no value]
PopularScience_19240501_0104_005_0287.xml
advertisement
128
128
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0288.xml
article
129
129,130
[no value]
[no value]
Miniature Aero Car Driven by Toy Electric Motor
[no value]
[no value]
[no value]
Donald W. Clark
[no value]
PopularScience_19240501_0104_005_0289.xml
advertisement
129
129
[no value]
[no value]
VICTOR J. EVANS & CO.
[no value]
VICTOR J. EVANS & CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0290.xml
article
130
130
[no value]
[no value]
I NOTE THESE 7 SIGNS IN MEN PAST 40
Common Middle Age Ailments
10,000 Men Find Relief
All Explained in Free Book
[no value]
[no value]
Byram C. Kelly
I am past 40 myself. I had begun to wonder when I would begin to break— to lose my old-time pep and aggressiveness—when, through a mutual friend I made the personal acquaintance of a certain member of the American Association for the Advancement of Science, whose wonderful work I had heard of.
PopularScience_19240501_0104_005_0291.xml
article
130
130
[no value]
[no value]
Strong Waste-Paper Basket Built of Contrasting Woods
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0292.xml
advertisement
130
130
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0293.xml
advertisement
130
130
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0294.xml
advertisement
130
130
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0295.xml
article
131
131
[no value]
[no value]
Child’s Chair Is Cut from a Single Board
[no value]
[no value]
[no value]
Homer S. Trecartin
I HAD just read an article by a children’s doctor telling of the discomfort caused to a child by having to sit on a chair too high for his feet to reach the floor and with no means for supporting them. So I decided to make a comfortable chair for my seven-year-old boy.
PopularScience_19240501_0104_005_0296.xml
advertisement
131
131
[no value]
[no value]
MUNN & COMPANY
[no value]
MUNN & COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0297.xml
advertisement
131
131
[no value]
[no value]
RANDOLPH & CO.
[no value]
RANDOLPH & CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0298.xml
advertisement
132
132
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0299.xml
advertisement
133
133
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0300.xml
advertisement
134
134
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0301.xml
article
135
135
[no value]
[no value]
Finds Diet of Dead Germs Will Kill Live Ones
[no value]
[no value]
[no value]
[no value]
THE possibility of vaccinating against certain diseases by eating the dead germs or rubbing them on the skin is suggested by Prof. A. Besredka, a Russian, working on the staff of the Pasteur Institute, Paris, as a result of experiments upon animals and subsequently with human beings.
PopularScience_19240501_0104_005_0302.xml
advertisement
135
135
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0303.xml
advertisement
135
135
[no value]
[no value]
CALIFORNIA TRADING CO.: ASTRA
[no value]
CALIFORNIA TRADING CO.
ASTRA
[no value]
[no value]
PopularScience_19240501_0104_005_0304.xml
advertisement
135
135
[no value]
[no value]
STA-RITE BATTERY CO.
[no value]
STA-RITE BATTERY CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0305.xml
advertisement
136
136
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0306.xml
advertisement
137
137
[no value]
[no value]
Electrical Research Laboratories
[no value]
Electrical Research Laboratories
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0307.xml
advertisement
137
137
[no value]
[no value]
AMERICAN TOP AND BODY CO.
[no value]
AMERICAN TOP AND BODY CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0308.xml
advertisement
137
137
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0309.xml
advertisement
137
137
[no value]
[no value]
F. SPORS & CO.
[no value]
F. SPORS & CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0310.xml
advertisement
138
138
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0311.xml
advertisement
139
139
[no value]
[no value]
NEVERLEAK TIRE FLUID
[no value]
NEVERLEAK TIRE FLUID
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0312.xml
advertisement
139
139
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0313.xml
advertisement
139
139
[no value]
[no value]
The Fate-Root-Heath Company
[no value]
The Fate-Root-Heath Company
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0314.xml
advertisement
140
140
[no value]
[no value]
ADAMS-MORGAN CO.: PARAGON
[no value]
ADAMS-MORGAN CO.
PARAGON
[no value]
[no value]
PopularScience_19240501_0104_005_0315.xml
advertisement
140
140
[no value]
[no value]
The CARNAGEY INSTITUTE
[no value]
The CARNAGEY INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0316.xml
advertisement
140
140
[no value]
[no value]
MORRISON LABORATORIES, INC.
[no value]
MORRISON LABORATORIES, INC.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0317.xml
advertisement
141
141
[no value]
[no value]
GENERAL ELECTRIC
[no value]
GENERAL ELECTRIC
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0318.xml
advertisement
141
141
[no value]
[no value]
W. F. YOUNG. INC.
[no value]
W. F. YOUNG. INC.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0319.xml
advertisement
141
141
[no value]
[no value]
AMERICAN RADIO MFG.CO.
[no value]
AMERICAN RADIO MFG.CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0320.xml
advertisement
142
142
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0321.xml
advertisement
142
142
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0322.xml
advertisement
142
142
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0323.xml
article
143
143
[no value]
[no value]
Here Are Correct Answers to Questions on Page 71
[no value]
[no value]
[no value]
[no value]
1. The coldness and dryness of the air cools the skin. This increases the circulation of blood. The better circulation carries more oxygen to the brain and other organs and makes us feel more active. 2. In samples of rock that explorers have brought back from the polar regions, geologists have found fossils of plants that grow only in warm countries.
PopularScience_19240501_0104_005_0324.xml
advertisement
143
143
[no value]
[no value]
DIAMOND STATE FIBRE COMPANY
[no value]
DIAMOND STATE FIBRE COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0325.xml
advertisement
143
143
[no value]
[no value]
HYRE ELECTRIC CO.
[no value]
HYRE ELECTRIC CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0326.xml
advertisement
143
143
[no value]
[no value]
PERRY-LUDLOW CO.
[no value]
PERRY-LUDLOW CO.
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0327.xml
advertisement
144
144
[no value]
[no value]
Motor City Syndicate
[no value]
Motor City Syndicate
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0328.xml
advertisement
145
145
[no value]
[no value]
THE MAGNA VOX CO.: MAGNAVOX
[no value]
THE MAGNA VOX CO.
MAGNAVOX
[no value]
[no value]
PopularScience_19240501_0104_005_0329.xml
advertisement
146
146
[no value]
[no value]
OLIVER OIL-GAS BURNER COMPANY
[no value]
OLIVER OIL-GAS BURNER COMPANY
[no value]
[no value]
[no value]
PopularScience_19240501_0104_005_0330.xml