Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Jean Baptiste Pierre Antoine de Monet de Lamarck
Alfred Edmund Brehm
Camille Flammarion
Charles Darwin
J. Ritzema Bos
Cath. Cool and H. A. A. van der Lek
Jac. P. Thijsse
A. A. Pulle
W.-F. Rondou
Jan Swammerdam
Antoni van Leeuwenhoek
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.