LIST OF ILLUSTRATIONS. 



Fia. 



19. 



80. 



81. 



82. 



83. 



8i. 



85. 



86. 



87. 



88. 



89. 



90. 



91. 



92. 



93. 



94. 



95. 



96. 



97. 



98. 



99 

 100. 

 101. 

 102. 

 103. 

 104. 

 105. 

 106 

 107. 

 108. 

 109. 

 110. 

 111. 

 112. 

 113. 

 114. 

 115. 

 116. 

 117. 

 118. 

 119. 

 120. 

 121. 

 122. 

 123. 

 124. 

 125. 



Idngvla anatina. 



Anatomy of a Bivalve Mollusk, 



Shells of ZamellibrancAiata, 



Ampullaria canaliculata. 



Tongue of Whelk, 



Shells of Gasteropoda, 



Doris JoTinstoni, 



Garinaria cynibium, 



Limax Soweriyi, 



Morphology of Pteropoda, 



Sepiola Atlantica, 



Paper Nautilus, . 



Pearly Nautilus, 



Orfhoceras, 



Diagram of Inverfebrata and Verteirata, 



Lumbar Vertebra of Whale, and Diagri 



Skeleton of Beaver, . 



Fore-limb of Chimpanzee, 



Hind-limb of Chimpanzee, . 



Digestive System of a Mammal, 



Blood-corpuBoles of Verteirata, 



Scales of Fishes, ... 



Skeleton of Pereh, 



Outline of a Fish, 



Tails of Fishes, 



Diagram of the Circulation of a Fish, 



Diagram of the Lanoelet, 



Lamprey, .... 



Gajioid Fishes, 



White Shark and ChimcBra, 



Lepidosiren annectens, 



SipTiortops anrmlatvs, 



Axolotl, .... 



Great Water-newt, 



Tree-frog, .... 



Development of the Common Frog, 



Skull of a Python, 



Diagram of the Circulation of a Keptile, 



Skeleton of a Tortoise, . 



Hawk' s-bill Turtle, . 



Naja Maje, 



Eye and Head of Viper, 



Slow-wonn, 



Sdncus q^cinaUs, 



Crocod/iZus vulgaris. 



Ichthyosaurus, 



of Thoracic Vertebra, 



