Books in Browsing: Science - Genetics/Biology/Evolution (sorted alphabetically)
- octopus : or, The "devil-fish" of fiction and of fact Henry Lee
- Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 Bruce Fink and Leafy Jane Corrington Hilker
- Ohio naturalist, Vol. 1, No. 4, February 1901 Ohio State University. Biological Club
- Old Riddle and the Newest Answer John Gerard
- Omphalos: An Attempt to Untie the Geological Knot Philip Henry Gosse
- On Germinal Selection as a Source of Definite Variation August Weismann
- On Growth and Form D'Arcy Wentworth Thompson
- On The Affinities of Leptarctus primus of Leidy Jacob Lawson Wortman
- On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment Honoré Bourguignon
- On the Genesis of Species St. George Jackson Mivart
- On the Method of Zadig Thomas Henry Huxley
- On the Origin and Metamorphoses of Insects Sir John Lubbock
- On the Origin of Species Charles Darwin
- On the Origin of Species by Means of Natural Selection Charles Darwin
- On the Origin of Species By Means of Natural Selection Charles Darwin
- On the Origin of Species by Means of Natural Selection Charles Darwin
- On the phenomena of hybridity in the genus Homo Paul Broca
- On the Reception of the 'Origin of Species' Thomas Henry Huxley
- On the Relations of Man to the Lower Animals Thomas Henry Huxley
- On the Study of Zoology Thomas Henry Huxley
- On the Variation of Species, with Especial Reference to the Insecta Thomas Vernon Wollaston
- Organism as a Whole, from a Physicochemical Viewpoint Jacques Loeb
- Origin of Species by Means of Natural Selection Charles Darwin
- Origin of Species Thomas Henry Huxley
- Origin of Vertebrates Walter Holbrook Gaskell