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Free
Thomas Henry Huxley
Collected Essays, Volume V Science and Christian Tradition: Essays
Free
J. Knox Jones, Gary L. Phillips
A New Subspecies of the Fruit-eating Bat, Sturnira ludovici, From Western Mexico
Free
John Perry
Spinning Tops The "Operatives' Lecture" of the British Association Meeting at Leeds, 6th September, 1890
Free
Alfred Russel Wallace
Contributions to the Theory of Natural Selection A Series of Essays
Free
Thomas Henry Huxley
Lectures on Evolution Essay #3 from "Science and Hebrew Tradition"
Free
William Edward Duellman
The Amphibians and Reptiles of Michoacán, México
Free
A. S. (Alpheus Spring) Packard
Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses
Free
Robert A. Chipman
The Earliest Electromagnetic Instruments
Free
Edward Everett
The Uses of Astronomy An Oration Delivered at Albany on the 28th of July, 1856
Free
Hugo de Vries
Species and Varieties, Their Origin by Mutation
Free
A. M. (Albert Moore) Reese
Development of the Digestive Canal of the American Alligator
Free
Jacob Abbott
Rollo's Experiments
Free
Thomas Henry Huxley, Charles Darwin
Note on the Resemblances and Differences in the Structure and the Development of the Brain in Man and Apes
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James Hutton
Theory of the Earth With Proofs and Illustrations, Volume 2 (of 4)
Free
Various
Birds, Illustrated by Color Photography, Vol. 1, No. 5 May, 1897
Free
Various
The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology)
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Francis Kermode
Catalogue of British Columbia Birds
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Albert Burton Farnham
Home Taxidermy for Pleasure and Profit A Guide for Those Who Wish to Prepare and Mount Animals, Birds, Fish, Reptiles, etc., for Home, Den, or Office Decoration
Free
Rufus Merrill
Book about Animals
Free
William Watson
Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation
Free
Jon C. Barlow
Natural History of the Bell Vireo, Vireo bellii Audubon
Free
John Muir
My First Summer in the Sierra
Free
Henry Alleyne Nicholson
The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science
Free
Leonard Haseman
An Elementary Study of Insects
Free
Samuel Butler
Evolution, Old & New Or, the Theories of Buffon, Dr. Erasmus Darwin and Lamarck, as compared with that of Charles Darwin
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Edward C. (Edward Charles) Pickering
The Future of Astronomy
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Stephen David Durrant, Harold S. Crane
Three New Beavers from Utah
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William Beebe
Edge of the Jungle
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Anonymous
IBM 1401 Programming Systems
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Various
Scientific American Supplement, No. 433, April 19, 1884
