PDF Books in Biology
Our Vanishing Wild Life - Its Extermination and Preservation
by William T. HornadayThe preservation of animal and plant life, and of the general beauty of Nature, is one of the foremost duties of the men and women of to-day. It is an imperative duty, because it must be performed at once, for otherwise it will be too late. Every possible means of preservation,—sentimental, educational and legislative,—must be employed.The present ..
The Extermination of the American Bison
by William T. HornadayIt is hoped that the following historical account of the discovery, partial utilization, and almost complete extermination of the great American bison may serve to cause the public to fully realize the folly of allowing all our most valuable and interesting American mammals to be wantonly destroyed in the same manner. The wild buffalo is practicall..
Structure and Functions of the Body
by Annette FiskeAlthough there are already in existence many books on anatomy and physiology for nurses, none with which I am acquainted has seemed to me to provide in concise form just the knowledge needed by the nurse in her profession. Most of them, moreover, separate the anatomy from the physiology and all treat the different systems of tissues separately, fir..
The Evolution Theory, Vol. 2 of 2
by August WeismannWe have endeavoured to explain the handing on of the complement of heritable qualities from one generation to another as due to a continuity of the germ-plasm, and we assumed that the germ-cells never arise except from cells in the 'germ-track'; that is, from cells which are equipped, from the fertilized egg-cell onwards, with a complete sample of ..
Essays of a Biologist
by Julian HuxleyThe biologist cannot fail to be impressed by the fact that his science to-day is, roughly and broadly speaking, in the position which Chemistry and Physics occupied a century ago. It is beginning to reach down from observation to experimental analysis, and from experimental analysis to grasp of principle. Furthermore, as the grasp of principles in ..
An Attempt to Investigate the Seat of Animal Life
by Henry CurtisThe capacity and aptitude for motion, observable in man, naturally lead us to an enquiry into the general principle of his corporeal functions. To a disquisition of which I devote the following pages. Aware of the intricacy of my subject, and that the operations of the animal body necessarily embrace agents not within the range of our senses, I can..
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..