186

82. Bones of the foot of four different forms of the artiodactyl
type 187

83. Feet and teeth In fossil pedigree of the Horse 189

84. _Palaeotherium_. (Lower Tertiary of Paris Basin) 190

85. _Hipparion_. (New World Pliocene) 192

86. Comparative series of Brains 194

87. Ideal section through all the above stages 195

88. Skulls of Canadian Stag, _Cervalces Americanus_, and Elk 198

89. Transmutations of _Planorbis_ 200

90. Transformation of _Strombus_ 202

91. Pigeons. Drawn from life 298

92. Pigeons (_continued_). Drawn from life 299

93. Fowls. Drawn from life 300

94. Fowls (_continued_). Drawn from life 301

95. Pair of Japanese Fowls, long-tailed breed 302

96. Canaries. Drawn from life 303

97. Sebastopol, or Frizzled Goose 304

98. The Dingo, or wild dog of Australia 304

99. Dogs. Drawn from life 305

100. Dogs (_continued_). Drawn from life 306

101. The Hairless Dog of Japan 307

102. The skull of a Bull-dog compared with that of a Deer-hound 307

103. Rabbits. Drawn from life 308

104. Horses. Drawn from life 309

105. Sheep. Drawn from life 310

106. Cattle. Drawn from life 311

107. Wild Boar contrasted with a modern Domesticated Pig 312

108. Seasonal changes of colour in Ptarmigan (_Lagopus mutus_) 317

109. _Oedicneus crepitans_, showing the instinctive attitude of
concealment 320

110. Imitative forms and colours in insects 322

111. The larva of Puss Moth (_Cerura vinula_) 325

112. The larva of Puss Moth in disturbed attitude 326