INDEX. 



Abdomen of crayfish, 36. 



Of grasshopper, 12. 



Of rabbit, 127. 



Of spider, 31. 



Abdominal cavity of rabbit, 129. 

 Aboral pole of sea urchin, 186. 



Surface of starfish, 178. 

 Achilles' tendon, 90. 

 Adam's apple, 156. 

 Adductor muscles of clam, 58. 

 Air bladder of fish, 74, 76. 



Chambers of sow bug, 45. 



Sacs of grasshopper, 13, 14. 



Sacs of pigeon, 116. 



Sacs of snake, 98. 



Space in egg, 121. 



Tubes of grasshopper, 13. 

 Ambulacra of sea urchin, 188. 



Of starfish, 179, 180. 

 Ambulacral plates of sea urchin, 187. 



Of starfish, 179. 



Vesicles of starfish, 181. 

 Amoeba, 163. 



Division of, 164. 



Movements of, 163. 

 Amphibia, 82. 

 Ampullae of starfish, 181. 

 Anal plates of sea urchin, 186. 

 Animalcule, bell, 166. 



Slipper, 164. 



Wheel, 190. 

 Annulata, 47. 

 Anosia, 19. 

 Antennae of crayfish, 40. 



Of grasshopper, 10. 

 Antennules of crayfish, 40. 

 Anteorbital bone of fish, 72. 

 Anterior end of earthworm, 50. 



Of fish, 69. 

 Ant-lion, 28. 

 Ants, 25. 

 Anus of frog, 86. 



Aorta of fish, 76. 



Of frog, 85. 



Of mammal, 134, 135, 140. 

 Aortic arches of earthworm, 51. 

 Aperture of snail shell, 64. 

 Apex of heart, 136. 

 Aquarium, fishes in, 68. 

 Arachnida, 30. 

 Arch of aorta, 140. 



Neural, of vertebra, 78. 



Pectoral, of fish, 77. 

 Arches, aortic, of earthworm, 51 

 Arterial bulb offish, 76. 

 Arteries, cardiac, 139. 



Of crayfish, 42. 



Of distribution, 140. 



Of frog, 85, 88. 



Of pigeon, 118. 



Of snake, 98. 

 Artery, carotid, 140. 



Iliac, 141. 



Mesenteric, 140. 



Pulmonary, 135, 136. 



Renal, 140. 



Subclavian, 140. 

 Artificial light, in collecting, 4. 

 Atlas, 161. 



Auditory nerve, 150. 

 Auricle of clam, 60. 



Offish, 76. 

 Aur-vent valves, 139. 

 Aves, 104. 

 Axis, 161. 



Balancers of fly, 22. 

 Ball-and-socket joint, 161. 

 Barbs of feathers, in. 

 Barbules, in. 

 Beak of bird, 109. 



Of clam shell, 56. 

 Bee bread, 26. 



Glue, 27. 

 191 



