Issue: 19010601

Saturday, June 1, 1901
JUNE, 1901
2
True
59
Saturday, October 18, 2014

Articles
cover
115
115
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THE POPULAR SCIENCE MONTHLY.
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PopularScience_19010601_0059_002_0001.xml
article
115
115,116,117,118,119,120,121,122,123,124,125,126,127,128
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OUR FOREST RESERVATIONS.
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PROFESSOR J. W. TOUMEY
IT is highly probable that the future will chronicle the act of March 3, 1891, under which the Chief Executive of the United States is given power to segregate forest reservations from the public domain, as a law most fruitful in results of vast import to the future welfare of the country.
PopularScience_19010601_0059_002_0002.xml
article
129
129,130,131,132,133,134,135,136,137,138,139,140
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THE BLOOD OF THE NATION.
A STUDY OF THE DECAY OF RACES THROUGH THE SURVIVAL OF THE UNFIT.—II. IN WAR
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DAVID STARR JORDAN
XXV. Not long ago I visited the town of Novara, in northern Italy. There, in a wheatfield, the farmers have plowed up skulls of men till they have piled up a pyramid ten or twelve feet high. Over this pyramid some one has built a canopy to keep off the rain.
PopularScience_19010601_0059_002_0003.xml
article
141
141,142,143,144,145,146,147,148,149,150,151
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PROGRESS AND TENDENCY OF MECHANICAL ENGINEERING IN THE NINETEENTH CENTURY.—II.
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PROFESSOR ROBERT H. THURSTON
IN 1800, Galvani and Volta had sewed the seed, and since has sprung up the whole science and art of electrical physics. Ten years ago we had about 700 miles of electric railway; to-day about 15,000 miles are in operation in the United States alone; a thousand millions of dollars are invested in the stock, and an army of two hundred thousand men is employed by them, mainly in the great cities, but with steady growth towards all sections and into all aggregations of population.
PopularScience_19010601_0059_002_0004.xml
article
152
152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169
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THE PERIODIC LAW.
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PROFESSOR JAS. LEWIS HOWE
BEFORE the time of Lavoisier ideas concerning the nature of matter were mere speculations. Following the introduction, at the close of the eighteenth century, of the conception of the indestructibility of matter, and more especially with the introduction of the atomic theory a decade or so later, the idea of some sixty or seventy absolutely different kinds of matter received general acceptance.
PopularScience_19010601_0059_002_0005.xml
article
170
170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188
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A PLEA FOR PURE SCIENCE.
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PROFESSOR HENRY A. ROWLAND
THE question is sometimes asked us as to the time of year we like the best. To my mind, the spring is the most delightful; for nature then recovers from the apathy of winter, and stirs herself to renewed life. The leaves grow, and the buds open, with a suggestion of vigor delightful to behold; and we revel in this ever-renewed life of nature.
PopularScience_19010601_0059_002_0006.xml
article
189
189,190,191,192,193,194,195,196,197,198
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THE MALARIA-GERM AND ALLIED FORMS OF SPOROZOA.
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DR. GARY N. CALKINS
THE group of animal parasites to which the malaria-causing organism belongs is relatively unimportant when compared with the bacteria, a group of plant parasites, including the causes of most zymotic diseases in man—typhoid, cholera, diphtheria, scarlet fever, tuberculosis and the like, as well as beneficial forms which aid man in various ways.
PopularScience_19010601_0059_002_0007.xml
article
199
199,200,201,202,203,204,205,206,207,208
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THE WILD BIRD AT ARM'S LENGTH: A NEW METHOD OF BIRD STUDY.
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PROFESSOR FRANCIS H. HERRICK
IN the study of wild birds the problem of approach has always been difficult to master. The land birds of every continent are, as a rule, shy and difficult to study with that minuteness of detail which alone can satisfy the naturalist and careful observer of their habits.
PopularScience_19010601_0059_002_0008.xml
article
209
209,210,211,212,213,214,215,216
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A STUDY OF BRITISH GENIUS.
VI. MARRIAGE AND FAMILY.
VII. DURATION OF LIFE.
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HAVELOCK ELLIS.
THE tendency to celibacy among men of preeminent intellectual ability has frequently been emphasized by Lombroso and others. It is well illustrated by British men of genius. We may probably assume that by the age of fifty scarcely more than 10 per cent. of the male population remain bachelors, if we take the whole population into consideration.
PopularScience_19010601_0059_002_0009.xml
article
217
217,218,219,220,221,222,223,224
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THE PROGRESS OF SCIENCE.
THE NATIONAL ACADEMY AND OTHER SCIENTIFIC SOCIETIES.
THE HARVARD COLLEGE OBSERVATORY.
THE NEW YORK BOTANICAL GARDEN.
THE PRACTICAL APPLICATIONS OF ELECTRICITY.
THE WISCONSIN AGRICULTURAL EXPERIMENT STATION.
SCIENTIFIC NEWS.
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THE annual stated meeting of the National Academy of Sciences was held in Washington in the third week in April. Professor Wolcott Gibbs, one of the two surviving founders of the Academy and the distinguished dean of American men of science, having resigned the presidency a year ago, Mr. Alexander Agassiz, of Cambridge, was elected to the office.
PopularScience_19010601_0059_002_0010.xml