- Wing of a Bird, Showing the Arrangement of the Feathers
- Volvox
- The Skull and Brain-Case of Pithecanthropus
- Surinam Toad (Pipa Americana) with Young Ones Hatching out of Little Pockets on her Back
- Skeletons of the Gibbon, Orang, Chimpanzee, Gorilla, Man
- Proterospongia
- Nautilus
- Early Life-History of the Salmon
- Diagram of amœba
- An Eight-Armed Cuttlefish or Octopus Attacking a Small Crab