428 
INDEX. 
Megalosaurus, 324. 
Megatherium, 344. 
Melania, 278. 
Meloloutha, 131,156. 
Mesentery, 83. 
Mesoblast, 199,169. 
Mesoderm, 24G. 
Metamorphosis, 207. 
“ of Crab, 209. 
“ of Frog, 209. 
“ of Grasshopper, 20S. 
“ of Insect, 20S. 
“ of Starfish, 208. 
Metazoa, 244. 
Metridium, 251. 
“ see Actinoid Polyp. 
Millepede, see Myriapoda. 
Millepore, 391. 
Mimicry, 217. 
Minerals and'Organisms, 19. 
Mite, 28S, 258. 
Moa, 328. 
Molar Teeth, 69, 70, 9, 31, 35, 36. 
Mole, 346. 
Mollusca, 269. 
“ absorption of, 94. 
“ anatomy of, 45, 46, 47, 78. 
“ circulation in, 106. 
“ development of, 205. 
“ digestion of, 92. 
“ distribution of, 376. 
“ ear of, 178,150. 
“ growth of, 214. 
“ kidney of, 126, 78. 
“ liver of, 124. 
“ locomotion of, 161. 
“ metamorphosis of, 211. 
“ mode of feeding of, 52. 
“ mouth of, 56. 
“ nervous system of, 16S, 134, 
135,151-154. 
“ number of species of, 221. 
“ respiration in, 113, 45, 46, 47, 
78. 
“ salivary glands of, 122. 
“ shell of, 133, 385, 99,100. 
“ skin of, 127. 
“ see Clam, Cuttle-fish, Snail, 
Squid. 
Monad, 243,187. 
Monera, 240,183. 
Monkey, 356,19, 352. 
“ see Primates. 
Monodelphia, 344. 
Monomya, 271. 
Monotremata, 342, 331. 
“ mouth of, 62. 
Morphology, 12. 
Mosquito, 59, 300, 269. 
“ metamorphosis of, 208,173. 
“ mode of feeding of, 50. 
Moth, 300, 272, 274-276. 
“ anatomy of, 79, 43. 
“ metamorphosis of, 275. 
“ see Butterfly, Lepidoptera. 
Mother-of-pearl, 123. 
Motion, 154. 
Motor Nerves, 167. 
Moulting, 128,131, 209. 
Mouse, 346, 65. 
Mouth, 55. 
“ of Arthropoda, 57. 
“ of Ascidia, 60. 
“ of Birds, 62. 
“ of Coelenterata, 55. 
“ of Echinodermata, 56. 
“ of Fishes, 61. 
“ of Infusoria, 55. 
“ of Mammals, 62. 
“ of Mollusks, 56. 
“ of Parasites, 55. 
“ of Reptilia, 61. 
“ of Vermes, 57. 
“ of Vertebrata, 60. 
Mucous Membrane, 89, 58. 
Mud-fish, 315. 
Murex, 278. 
Mils, 346. 
“ see Mouse. 
Musca, see Diptera, Fly, House-fly. 
Muscle, 39,11,12, 121,122,130,131 
“ development of, 204. 
“ of Invertebrates, 156. 
“ kinds of, 155. 
“ of Vertebrates, 156. 
Mushroom-coral, 252, 202. 
Musk-deer, 99, 65. 
Mussel, 270, 225. 
Myriapoda, 287, 259. 
“ alimentary canal of, 77. 
“ mouth of, 57. 
“ respiration in, 116. 
“ see Centipede. 
Myrmecophaga, 344, 333. 
Mytilus, 272, 225. 
Myxine, 67. 
see Hag-fish. 
Nails, 135. 
Narwhal, 68, 223. 
Natatores, 32S. 
Natica, 27S. 
Natural Selection, 227. 
Nauplius, 211,177. 
Nautilus, 80,133, 279, 247. 
Necturus, 318, 294. 
Nematelminthes, 265, 218. 
Nereis, 52, 269, 17 
Nerve-cells, 40,132. 
“ fibres, 40,13. 
“ kinds of, 167. 
“ velocity of impulse of, 167. 
