Chapter IV: Chelonians, or Shielded Reptiles

Formation 155
Distribution and Classification 157
Tortoises 158
Land 158
Margined 159
Moorish 159
Greek 160
Elephantine 160
Genus Pyxis 161
Ditto Kinixys 161
Homopodes 161
_Elodians, or Marsh Tortoises_:
Mud 162
Emydes 163
Pleuroderes 164
_Potamians, or River Tortoises_:
Trionyx 164
_Thalassians, or Sea Tortoises_:
Green 177
Hawk's-bill 177
Loggerhead 178
Leather-back 178

BIRDS.

INTRODUCTORY CHAPTER.

Anatomy 181
Plumage 184
Beaks 189
Digestive Organs 191
Powers of Sight 193
Vocal Organs 195
Nests 197
Reproduction 201
Longevity 203
Utility 205
Classification 207

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