3 68 



Index. 



Mesenteries of sea anemone, 326. 



Of starfish, 335. 

 Mesentery of rabbit, 251. 

 Mesoderm of sponge, 308. 

 Mesogloea of Hydra, 313. 

 Mesothoiax of grasshopper, 2. 

 Metamorphosis, 30. 

 Metathorax of grasshopper, 2. 

 Metazoa, 300. 

 Mice, 262. 

 Micronucleus of paramecium, 292. 



Of vorticella, 295. 

 Mid brain, 285. 

 Midges, 34. 

 Migration of birds, 220. 



Of fishes, 165. 

 Milkweed butterfly, 25. 

 Milliped, 54. 

 Mimicry, 31. 

 Mink, 282. 

 Mite, 9, 60. 



Mocking bird, 240, 241. 

 Molars of rabbit, 248. 

 Mole, 263. 

 Mollusca, 102. 

 Molluscoida, 353. 

 Monarch butterfly, 25, 26, 31. 

 Monitor, 198. 

 Monotremata, 256. 

 Moose, 273, 276, 277. 

 Mosquito, 35. 



Hawk, 14. 

 Moss animals, 354. 

 Mother Carey's chickens, 226. 

 Mother-of-pearl, 136. 

 Moths and butterflies, 28. 

 Motion of amoeba, 287, 290. 

 Molting of birds, 219. 



Of crayfishes, 74. 



Of king crab, 85. 



Of snakes, 204. 



Of spiders, 56. 

 Mountain lion, 279. 



Sheep, 271. 

 Mourning doves, 233. 

 Mouse brain, 285. 



Hawk, 240. 

 Mouth of earthworm, 92. 



Of hydra, 313, 314. 

 Mud eel, 190. 



Mud fish, 178. 



Nest, 180. 



Puppy, 191. 

 Mule deer, 275. 

 Mullet, 165. 

 Multiplication of amoeba, 289. 



Of hydra, 317. 



Of hydroids, 321. 



Of paramecium, 294. 



Of protozoa, 296. 

 Muscle pectoral of pigeon, 211. 



Scars of clarn shell, 103, 104. 



Subclavian of pigeon, 212. 

 Muscles of clam, 106, 109. 



Of crayfish, 62. 



Of earthworm, 89, 92. 



Of grasshopper, 3. 



Of sea anemone, 327. 



Of starfish, 331. 

 Mussel, salt-water, 124. 

 Myriapoda, 54. 



Natica, 134, 135. 

 Nautilus, 144. 

 Neck of pigeon, 214. 

 Necturus, 191. 

 Nemathelminthes, 351. 

 Nematocysts of hydra, 315. 

 Nereis, 99. 



Nerve collar of earthworm, 89. 

 Nerve ring of crayfish, 71. 



Of earthworm, 96. 

 Nervous system of clam, 117. 



Of crayfish, 70, 71. 



Of earthworm, 96. 



Of frog, 187, 188. 



Of grasshopper, 8. 



Of pigeon, 217. 



Of rabbit, 249, 254. 



Of sea urchin, 341. 



Of snail, 130. 



Of squid, 142. 



Of starfish, 336. 



Nettle cells of sea anemone, 326. 

 Neuroptera, 24. 

 Newts, 192. 

 Nighthawk, 238. 

 Noctiluca, 298. 

 No-see-ems, 34. 

 Notochord, 148. 



