PDF Books in Children's Science & Nature
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The Life of the Caterpillar
by Jean-Henri FabreThis caterpillar has already had his story told by Réaumur,1 but it was a story marked by gaps. These were inevitable in the conditions under which the great man worked, for he had to receive all his materials by barge from the distant Bordeaux Landes. The transplanted insect could not be expected to furnish its biographer with other than fragmenta..
Irritability - A Physiological Analysis
by Max VerwornThe lectures on irritability here published were held at the University of Yale in October, 1911. When the authorities of that University honored me by an invitation to give a course of Silliman memorial lectures, I accepted with the more pleasure as it furnished me with the opportunity of summarizing the results of numerous experimental researches..
Subject to Vanity
by Margaret BensonWhy were cats created? I do not mean this as a sceptical question, doubtful of any end in their creation; no answer about adaptation and environment would be adequate, nor any statement of specific use. For with all the higher animals—that is to say, with all the animals one intimately knows—there is some beauty of intelligence, physique, or charac..
The Strange Adventures of a Pebble
by Hallam HawksworthThe purpose of this little book is to present the chief features in the strange story of the pebbles; and so of the larger pebble we call the earth. It is hoped that readers of various ages will be entertained, without suspecting that they are being taught. Several things led the author to believe that such a book might be wanted.(a) The circumstan..
Comet Lore - Halley's Comet in History and Astronomy
by Edwin EmersonConstantinople, the great capital of the Orient, which owes its name to this same Emperor Constantine, was lost to Christendom in the year 1453, when the Turks overran the great city with fire and sword. This event, it is recorded, was heralded by another appearance of a Comet. Three years later, when the Turks were about to descend upon Belgrade, ..
The Life of the Weevil
by J. Henri FabreI have gathered into this volume the essays on Weevils contained in the Souvenirs entomologiques, lest I should swell unduly the number of volumes devoted to Beetles, of which there will be three in all, or four if we include the present book.In winter, when the insect takes an enforced rest, the study of numismatics affords me some delightful mome..
The Mason-Wasps
by Jean-Henri FabreThis is the second volume on Wasps in the Collected Edition of Fabre’s Souvenirs entomologiques. The first of these was The Hunting Wasps; and the present volume is somewhat wilfully entitled, for all Wasps hunt in varying degrees, if not on their own behalf, at least on that of their young. My object, however, was to bring together all the essays ..
The Principle of Relativity
by Albert EinsteinLord Kelvin writing in 1893, in his preface to the English edition of Hertz’s Researches on Electric Waves, says “many workers and many thinkers have helped to build up the nineteenth century school of plenum, one ether for light, heat, electricity, magnetism; and the German and English volumes containing Hertz’s electrical papers, given to the wor..