12 Pages in Charles Darwin's Library associated with "fauna - Hydra"

Elements of physiology.
By: Müller, Johannes. - Baly, William,
Publication info: London :Taylor & Walton,1838-1842.
Volume: v.2
Pages: Page 1425 Page 1426 Page 1427 Page 1428 Page 1449
Introduction á la zoologie générale.
By: Milne-Edwards, H. (Henri),
Publication info: Paris :Victor Masson,1851.
Pages: Page 43
On parthenogenesis.
By: Owen, Richard,
Publication info: London :John Van Voorst,1849.
Pages: Page 7 Page 8 Page 9 Page 25 Page 26
Principles of comparative physiology.
By: Carpenter, William Benjamin,
Publication info: London :John Churchill,1854.
Pages: Page 480