Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Septimus Sisson
Jean-Henri Fabre
Edward Jenner
Aristotle
Walter W. Froggatt
Sydney J. Hickson, Marcus Hartog, Igerna Brünhilda Johnson Sollas, and E. W. MacBride
Jagadis Chandra Bose
George John Romanes
William Thomas Fernie
Charles Darwin
Alexander von Humboldt
Henry Walter Bates
J. W. H. Eyre
United States. Federal Bureau of Investigation
Roy Watling
Ernst Haeckel
M. Quinby
Maxwell T. Masters
Frank E. Beddard, Marcus Hartog, W. B. Benham, F. W. Gamble, and Lilian Sheldon
Douglas English
William Harvey
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.