INDEX 
In the Index the numbers in Roman type (21) refer to pages; those in bold-faced 
type (40) refer to cuts. No attempt is made to analyze the statements made for 
each group in Part II. Reference is made for each class or prominent order to those 
cuts in Part I. which illustrate the group. 
Abomasus, 89, 56. 
Absorption, Invertebrates, 94. 
“ Vertebrates, 94, 60, 61. 
Acaleplire, 247, 178. 
44 see Jelly-fish. 
Acarina, 288, 258. 
Acarus, 288. 
Acetabulum, 147. 
Acipenser, 315, 290. 
Acorn-shell, 284, 254. 
44 see Barnacle. 
Acrania, 30S, 810, 282. 
Acrydium, 297. 
Actinaria, 251, 198-207. 
Actinoid Polyp, 251, 199. 
“ anatomy of, 38, 95,198. 
44 blood of, 97. 
“ development of, 205, 208. 
“ liver-cells of, 123. 
“ mouth of, 55, 38, 198. 
44 nettle-cells of, 51. 
“ prehension of, 51. 
“ reproduction of, 192. 
“ respiration of, 112. 
44 skeleton of, 130, 95. 
“ skin of, 127. 
Adder, 320, 298. 
Adipose Tissue, 38, 10. 
iEolis, 274. 
^Epyornis, 327. 
Air-bladder, 117. 
Air-sac, 117. 
Albatross, 330. 
Albumen, 19. 
Alcyonaria, 256, 200, 207, 208. 
Alcyonium, 256, 208. 
Alimentary Canal, 74. 
“ “ Ocelenterata, 76. 
“ 44 Crustacea, 77. 
44 “ development of, 203. 
Alimentary Canal, duodenum, 90. 
“ “ Echinoderms, 76. 
“ 44 Fishes, 80. 
** “ Insects, 78. 
“ “ Mammals, 85. 
44 “ microscopic anatomy 
of, 57, 58. 
“ 44 Mollusks, SO. 
44 44 Protozoa, 75. 
44 4 4 Spiders, 79. 
4 4 4 4 stomach, 87. 
44 44 structure of, 89. 
44 44 see Intestine, Mouth, 
Stomach, Teeth. 
Allantoidea, 393. 
Allantois, 117, 203, 169-171. 
Alligator, 67, 324,181, 303. 
44 nest, 196. 
Alternate generation, 211. 
Ambulacra, 131, 262, 
Ammonite, 279. 
Amnion, 202, 170,171. 
Amoeba, 50, 168, 240, 187. 
44 conjugation of, 196. 
44 ectosarc of, 75. 
44 feeding of, 55. 
44 locomotion of, 154, 157. 
Amphibia, 317, 63-65, 76, 85, 87, 294- 
297. 
45 blood of, 99, 63-65. 
44 brain of, 170,140. 
44 circulation of, 108, 76. 
44 lungs of, 118. 
44 mouth of, 61. 
44 see Frog. 
Amphicoelous, 386. 
Amphioxus, 97, 138, 233, 310, 282. 
44 feeding of, 50. 
44 skeleton of, 139. 
Amphithoe, 2S4, 252. 
