Issue: 19121201

Sunday, December 1, 1912
DECEMBER, 1912
36
True
81
Wednesday, October 22, 2014

Articles
cover
521
521
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THE POPULAR SCIENCE MONTHLY.
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PopularScience_19121201_0081_036_0001.xml
article
521
521,522,523,524,525,526,527,528,529,530
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THE EVOLUTION OF THE DOLLAR MARK
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PROFESSOR FLORIAN CAJORI
THERE are few mathematical symbols the origin of which has given rise to more unrestrained speculation and less real scientific study than has our dollar mark, $. About a dozen different theories have been advanced by men of imaginative minds, but not one of these would-be historians permitted himself to be hampered by the underlying facts.
PopularScience_19121201_0081_036_0002.xml
article
531
531,532,533,534,535,536
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PRACTICAL FORESTRY EXPLAINED
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GEN. C. C. ANDREWS
FORESTRY is the science of deriving a sure and fairly good revenue from the production of valuable timber trees on such hilly, rocky or sandy land as is unfit for field crops. The pine takes from the soil only a twelfth part of the mineral matter that is required for field crops.
PopularScience_19121201_0081_036_0003.xml
article
537
537,538,539,540,541,542,543,544,545,546,547,548,549,550
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INSECTS AS AGENTS IN THE SPREAD OF DISEASE
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CHARLES T. BRUES
LESS than fifteen years have elapsed since the scientific world entertained its first definite suspicion that certain human diseases might be spread through the agency of insects. Twelve have gone by since that suspicion became an established fact, and in this short space of time so much has been learned concerning the pernicious activities of these small animals in disseminating disease-causing organisms among man and the higher animals, that the science of preventive medicine can now be applied to many important diseases which were before utterly beyond its reach.
PopularScience_19121201_0081_036_0004.xml
article
551
551,552,553,554,555,556,557,558,559,560,561,562,563
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THE GENESIS OF INDIVIDUAL AND SOCIAL SURPLUS
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PROFESSOR ALVAN A. TENNEY
LIFE implies surplus energy. No organism can exist for any appreciable period without experiencing the fact that its environment is more favorable or more hostile to its life-activities at one time than at another time. Strength that just suffices to resist some special stress thus yields a surplus when that stress is over.
PopularScience_19121201_0081_036_0005.xml
article
564
564,565,566,567,568,569,570,571,572,573
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RISING PRICES AND THE PUBLIC
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PROFESSOR JOHN BAUER
THE increasing cost of living, or more properly rising prices, has been the subject of much recent discussion. The causes have been explained and reexplained; everybody knows about increased gold production, also about the trusts, the tariff, labor unions, etc., in their joint and several relations to the subject.
PopularScience_19121201_0081_036_0006.xml
article
574
574,575,576,577,578,579,580,581
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THE FUNCTION OF THE AMERICAN COLLEGE
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PROFESSOR A. K. ROGERS
ALONG with the movement toward vocationalism in the lower schools, there is at the present time apparent an equally powerful and not wholly unrelated trend in the higher toward intellectual specialization. Any one who is acquainted with the situation knows that in so far as the college and university teacher has to-day any distinct notion at all of what he is about, it is likely to be in the majority of cases in terms of an exaltation of scientific scholarship.
PopularScience_19121201_0081_036_0007.xml
article
582
582,583,584,585,586,587,588,589,590
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REFORMING THE CALENDAR
KALENDER FOR 1918, A.D., AND EVER AFTER
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OBERLIN SMITH
Yes, tempus fugit,” remarked a philosophical gentleman of African descent, as I sat in his barber’s chair remarking that my time was limited, “but,” he went on to say, “we should not speak of time flying, for we fly through time.” This seems logical, and new, but in whatever way we regard time we must certainly measure it; and we now measure it rather foolishly—not so foolishly, however, as by many systems in the past.
PopularScience_19121201_0081_036_0008.xml
article
591
591,592,593,594,595,596,597,598,599,600
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BASIL VALENTINE: A SEVENTEENTH-CENTURY HOAX
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PROFESSOR JOHN MAXSON STILLMAN
ALL who are at all familiar with the early history of chemistry will recall the prominent place given to a writer who wrote under the name of Basil Valentine and in the early history of the sciences was generally assigned to the fifteenth century.
PopularScience_19121201_0081_036_0009.xml
article
601
601,602,603,604,605,606,607,608,609,610,611,612,613
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THE HINDU-ABABIC NUMERALS*
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EDWARD RAYMOND TURNER
AT present the Hindu-Arabic numerals hold nearly unlimited sway in the realm of number. In China, in Japan, in southeast Asia, and in parts of India, it is true, they are employed only by the upper classes and by foreign traders; but all over Europe, in Australia, and in North America, they are supreme; while in South America and in Africa they are used wherever civilized men make arithmetical computation.
PopularScience_19121201_0081_036_0010.xml
article
614
614,615,616,617,618,619,620
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THE PROGRESS OF SCIENCE
THE AWARD OF THE NOBEL PRIZE IN MEDICINE
VITAL STATISTICS AND THE DECREASING DEATH RATE
DR. LEWIS BOSS
SCIENTIFIC ITEMS
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THE Nobel prize in medicine has this year been awarded to Dr. Alexis Carrel, of the Rockefeller Institute for Medical Research, New York City. This is an honor not only to the distinguished investigator, but also to the institution which has given him opportunity and to his adopted country.
PopularScience_19121201_0081_036_0011.xml
article
621
621,622,632,624
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INDEX
NAMES OF CONTRIBUTORS ARE PRINTED IN SMALL CAPITALS
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Abilities, The Permanence of Interests and their Relation to, EDWARD L. THORNDIKE, 449 Administrative Peril in Education, JOSEPH JASTROW, 495 Agricultural Products of the United States, 519 Air, Holes in the, W. J. HUMPHREYS, 50 Allegheny Observatory, The New, 409 American, Descendants of Gauss, FLORIAN CAJORI, 105; Natural History, George Marcgrave, the First Student of, E. W. GUDGER, 250; College, Function of, A. K. ROGERS, 574 Anaphylaxis, Some Aspects of, JOHN AUER, 434
PopularScience_19121201_0081_036_0012.xml