INDEX. 
295 
Meteors, 191; and comets, 191. 
Microscope, 205, 
Milk Dipper, 167. 
Milkweed, I, 1. 
Milky Way, 148. 
Mimicry, IV, 48 ; 11, 8. 
Mines, depth of, 50. 
Monkey, IV, 189. 
Monsoons, 123. 
Moon, II, 86; size of, 178; face of, 
179; earth as seen from moon, 
188. 
Mountain forming, IV, 119. 
“ Mud-puppy,” 245, 
Myths, Great Bear, II, 90; (see Con¬ 
stellations). 
Nadir, 140. 
Natural Bridge, IV, 84. 
Natural selection, 263. 
Nebular hypothesis, 23 ; evidences 
for, 27; whirlpool, 25 ; nebulae, 
148; Cloud of Magellan, 150. 
Neozoic era, 64. 
Neptune, 187. 
Nettle, 266. 
Nitrogen, IV, 262, 
Northern Lights, IV, 251. 
Ocean currents, 112; Ferrel’s law 
of, 116. 
Ocelot, IV, 191. 
Orchid, IV, 213. 
Organisms, minute, 208; plant, 
208. 
Organs of speech. III, 133 ; organs 
disappear through disuse, 259; 
development, 259 ; origin, 258. 
Origin of deer’s antlers, 258. 
Orion, 163. 
Orohippus, 75. 
Ostrich, 261. 
Oxygen, IV, 260. 
Oyster, 70. 
Paleothere, 75, 
Paleozoic era, 64, 
Palms, IV, 159. 
Parasites, 19, 220. 
Patrefelis, 80, 
Pea, I, 74. 
Peat-bogs, 54. 
Peccary, IV, 192. 
Pegasus, 157. 
Penumbra, 175. 
Perseus, 154. 
Petroleum, 59. 
Phosphorescence, IV, 128. 
Photosphere, 176. 
Pigeons, 265. 
Pineapples, IV, 184. 
Pisa, tower, 2. 
Pisces, 167. 
Planets, origin, 27; major, 181; 
minor, 182; orbits, 182; earth, 
187 ; life on, 190, 
Plants, aquatic, IV, 2; cat-tail, IV, 
2; Devonian forest (restored), 
illus., 45; ferns, 55; fucoids, 38 ; 
and animal life, 205; likes in, 
225 ; medullary rays, IV, 22; mi¬ 
nute forms, 38; prairie plants and 
forest trees, 252; rhizopods, 218 ; 
water-lilies, IV, 3; crowding 
weaker, 252. 
Plantains, IV, 182. 
Pleiades, 139, 147,162. 
Plesiosaur, 68. 
Poetry, II, 121, 126; III, 1, 28; 
IV, 75; 287. 
Poison bottle, II, 25. 
Pollen, 269. 
Porpoises, IV, 130. 
Portuguese man-of-war, IV, 149. 
