PDF Books in Children's Science & Nature
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Dairy Disagreeables Busy the Bacteriologists
by F. H. HallThe flavor of good milk and cream, then, is an inherent quality due to the normal constituents of the milk; the flavors of butter, both good and bad, except that due to the fat and to odors absorbed by the milk, are held to be the result of bacterial action; the fundamental flavors of cheese are probably due to chemical decomposition, started by un..
Aspects of Nature, in Different Lands and Different Climates Vol 1 of 2
by Alexander von HumboldtIt is not without diffidence that I present to the public a series of papers which took their origin in the presence of natural scenes of grandeur or of beauty,—on the Ocean, in the forests of the Orinoco, in the Steppes of Venezuela, and in the mountain wildernesses of Peru and Mexico. Detached fragments were written down on the spot and at the mo..
More Beetles
by Jean-Henri FabreChildhood is pitiless because it does not understand, for nothing is more cruel than ignorance. None of my madcaps will heed the sufferings of the insect, a melancholy galley-slave chained to a cannon-ball. These artless minds find amusement in torture. I dare not always call them to order, for I admit that I on my side am also guilty, though I am ..
The Strangest Things in the World
by Thomas R. HenryThe challenges of Nature’s paradoxes have been sharp spurs to man’s search for knowledge since the start of science. Fortunately the number of these paradoxes is infinite, and so the quests are endless. Man never will know a wonderless world. In the phenomena of life especially we have come only to the zone of morning twilight. The bright day of un..
The Book of Stars
by Archie Frederick CollinsThe stars are the friends of everyone who knows them. If you have never stood out in the open and watched the stars on a clear night, you have missed the most wonderful sight to be seen from this little old mud ball of ours, and my advice to you is not to let another night go by without making friends with the stars.By the stars I mean everything i..
Researches on the Visual Organs of the Trilobites
by Gustaf LindstromIt is well known amongst palæontologists that the hypostoma of the trilobites has been the particular object for research and description by a few authors, as Barrande, Novák and Brögger and some passing notes concerning it are given in the descriptive works of other authors. In the following pages reference is often made to them and I may here giv..
The Principles of Biology, Volume 2 (of 2)
by Herbert SpencerTurning from the additions to the revisions, I have to say that the aid needed for bringing up to date the contents of this volume, has been given me by the gentlemen who gave me like aid in revising the first volume: omitting Prof. Perkin, within whose province none of the contents of this volume fall. Plant-Morphology and Plant-Physiology have be..
Relics of Primeval Life
by Sir J. William DawsonThe author was associated with the original discovery and description of these supposed earliest traces of life; and has since, in the intervals of other work, devoted much time to further exploration and research, the results of which have been published from time to time in the form of scientific papers. He has also given attention to the later d..