XXll 



CONTENTS. 



raragrapli . ■, , ^ 



49. 50. Fuudamcutal forms of the animal body 



51. 52. Metamerism of the body 



53 — 55. Comparisou of the organs .... 



56—58. Classification of the Animal Kingdom 



59. Bibliographical aids in Comparative Anatomy 



Pago 

 58 



61 



63 



61 



75 



Special Part. 



rirat Section. ProtOZOa. 



60. General review of the group '" 



Bibliography ....■••••••'' 



61 — 70. Organisation of the Protozoa '' 



71. 



72—78. 



79. 



80. 

 81. 82. 



83. 



84. 



85. 

 86—93. 

 91-98. 



Second Section. Cosleuterata (Zoophyta). 



General review of the group . . . • ^ • • • .89 



Bibliography "'^ 



Form of the body "1 



Appendages ........... 101 



Integnment .......•••• 103 



Skeleton 105 



Muscular system 108 



Nervous system 108 



Sensory organs .......■•• 109 



Alimentary canal .....••••.• HI 



Generative organs 119 



99. 



iUU J-Ud. 



104. 105. 



106. 



107—111 



112. 



113. 114. 



115—121 



122. 123 



124. 125 



126. 



127—132 



133. 



184. 135 



136. 



Third Section. Vermes. 



General review of the group 125 



Bibliography ........... 127 



Form of the body 128 



Appendages ........•.' 132 



External gills 135 



Integument .......•••• 136 



Skeleton 142 



Muscular system 142 



Nervous system 145 



Sensory organs 152 



Tactile organs .......... 152 



Visual organs 153 



Auditory organs .......... 156 



Alimentary canal . . . . . . . . . .156 



Enteric branchias ......... 163 



Accessory organs of the alimentary canal ..... 164 



Ooslom .........•>• 165 



