9 Pages in Charles Darwin's Library associated with "fauna - ray"

Elements of physiology
By: Müller, Johannes, - Baly, William,
Publication info: London, Taylor & Walton, 1838-1842
Volume: v.1
Pages: Page 447 Page 572 Page 1344 Page 1597 Page 1599 Page 1615 Page 1622
Essais de zoologie générale
By: Geoffroy Saint-Hilaire, Isidore,
Publication info: Paris, Roret, 1841
Volume: Zoologie générale (1841)
Pages: Page 90
Principles of comparative physiology
By: Carpenter, William Benjamin,
Publication info: London, John Churchill, 1854
Pages: Page 610