| Facts and Arguments for Darwin, With Additions by the Author |
| Mrs. Loudon's Entertaining Naturalist: Being Popular Descriptions, Tales, and Anecdotes of More Than Five Hundred Animals |
The Online Books Page hasn't yet cataloged the following titles:
| Cassell's Natural History, Vol. 1 (of 6) |
| Cassell's Natural History, Vol. 3 (of 6) |
This catalog page is provided by The Online Books Page, and the literature by Project Gutenberg.