CHAPTER I.
THE NATATORES, OR SWIMMING BIRDS.
Divers 212 Great Northern 213 Imbrine 216 Arctic 216 Black-throated 216 Red-throated 217 Penguins 218 Manchots 219 Grebes 221 Castanean 222 Crested 223 Guillemots 224
THE NATATORES, OR SWIMMING BIRDS.
Divers 212 Great Northern 213 Imbrine 216 Arctic 216 Black-throated 216 Red-throated 217 Penguins 218 Manchots 219 Grebes 221 Castanean 222 Crested 223 Guillemots 224