On the Origin of Species By Means of Natural Selection...

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498 INDEX. MONKEYS. Monkeys, fossil, 303. Monocanthus, 424. Mons, Van, on the origin of fruit-trees, 29, 39. Moquin-Tandon on sea-side plants, 132. Morphology, 434. Mozart, musical powers of, 209. Mud, seeds in, 386. Mules, striped, 165. Muller, Dr. F., on Alpine Australian plants, 37 5. Murchison, Sir R., on the formations of Russia, 289. --, on azoic formations, 307. --,on extinction, 317. Mustela vison, 179. Myanthus, 424. Myrmecocystus, 238. Myrmica, eyes of, 240. N. Nails, rudimentary, 453. Natural history, future progress of, 484. --selection, 80. --system, 413. Naturalisation of forms distinct from the indigenous species, 115. --in New Zealand, 201. Nautilus, Silurian, 306. Nectar of plants, 92. Nectaries, how formed, 92. Nelumbium luteum, 387. Nests, variation in, 212. Neuter insects, 236. Newman, Mr., on humble-bees, 74. New Zealand, productions of, not per-fect, 201. --, naturalised products of, 337. --, fossil birds of, 339. --,glacial action in, 373. --, crustaceans of, 376. --, algre of, 376. --, number of plants of, 389. --,flora of, 399. Nicotiana, crossed varieties of, 271. --, certain species very sterile, 257. Noble, Mr., on fertility of Rhododen-dron, 251. Nodules, phosphatic, in azoic rocks, 307. PEAR. 0. Oak, varieties of, 50. Onites apelles, 135. Orchis, pollen of, 193. Organs of extreme perfection, 186. --, electric, of fishes, 192. --of little importance, 194. --, homologous, 434. --,rudiments of, 450. Ornithorhynchus, 107, 416. Ostrich not capable of flight, 134. --, habit of laying eggs together 218. ' --,American, two species of, 349. Otter, habits of, how acquired, 179. Ouzel, water, 185. Owen, Prof., on birds not flying, 134. --,on vegetative repetition, 149. --, on variable length of arms in ourang-outang, 150. --, on the swim-bladder of fishes, 191. --, on electric organs, 192. --, on fossil horse of I.a Plata, 319. --, on relations of ruminants and pachyderms, 329. --, on fossil birds of New Zealand, 339. --, on succession of types, 339. --, on affinities of the dugong, 414. --, on homologous organs, 435. --, on the metco'tmorphosis of cephalo-pods and spiders, 442. P. Pacific Ocean, faunas of, 348. Paley on no organ formed to give pain, 201. Pallas on the fertility of the wild stocks of domestic animals, 253. Paraguay, cattle destroyed by flies, 72. Parasites, 217. Partridge, dirt on feet, 362. Parts greatly developed, variable, 150. --,degrees of utility of, 201. Parus major, 183. Passiflora, 251. Peaches in United States, 85. Pear, grafts of, 261. INDEX. 499 PELARGONIUM, Pelargonium, flowers of, 145. --, sterility of, 251. Pelvis of women, 144. Peloria, 145. Period, glacial, 365. Petrels, habits of, 184. Phasianus, fertility of hybrids, 253. Pheasant, young, wild, 216. Philippi on t ertiary species in Sicily, 312. Pictet, Prof., on groups of species sud­denly appearing, 302, 305. --,on rate of organic change, 313. --, on continuous succession of ge-nera, 316. --, on close alliance of fossils in con-secutive formations, 335. --,on embryological succession, 338. Pierce, Mr., on varieties of wolves, 91. Pigeons with feathered feet and skin between toes, 12. --,breeds described, and origin of, 20. --,breeds of, how produced, 39, 42. --,tumbler, not being able to get out of egg, 87. --, reverting to blue colour, 160. --, instinct of tumbling, 214. --, carriers, killed by hawks, 362. --, young of, 445. Pistil, rudimentary, 451. Plants, poisonous, not affecting certain coloured animals, 12. --, selection applied to, 32. --,gradual improvement of, 37. -- not improved in barbarous coun-tries, 38. -- destroyed by insects, 67. --, in midst of range, have to struggle with other plants, 77. --, nectar of, 92. --,fleshy, on sea-shores, 132. --,fresh-water, distribution of, 386. --, low in scale, widely distributed, 406. Plumage, laws of change in sexes of birds, 89. Plums in the United States, 85. Pointer dog, origin of, 35. --,habits of, 213. Poison not affecting certain coloured animals, 12. RODINIA. Poison, similar effect of, on animals and plants, 484. Pollen of fir-trees, 203. Poole, Col., on striped hemionus, 163. Potamogcton, 387. . Prestwich, Mr., on English and French eocene formations, 328. Primrose, 49. --,sterility of, 247. Primula, varieties of, 49. Proteolepas, 148. Proteus, 139. Psychology, future progress of, 488. Q. Quagga, striped, 165. Quince, grafts of, 261. R. Rabbit, disposition of young, 215. Races, domestic, characters of, 1 G. Race-horses, Arab, 35. ----,English, :356. Ramond on plants of Pyrenees, 368. Ramsay, Prof., on thickness of the British formations, 284. --,on faults, 285. Ratio of increase, 63. Rats, supplanting each other, 76. --, acc1imatisation of, 141. --, blind in cave, 137. Rattle-snake, 201. Reason and instinct, 208. Recapitulation, general, 459. Reciprocity of crosses, 258. Record, geological, imperfect, 279. Rengger on flies destroying cattle, 72. Reproduction, rate of, 63. Resemblance to parents in mongrels and hybrids, 273. Reversion, law of inheritance, 14. --in pigeons to blue colour, 160. Rhododendron, sterility of, 251. Richard, Prof., on Aspicarpa, 417. Richardson, Sir J., on structure of squirrels, 180. --,on fishes of the southern hemi­sphere, 376. Robinia, grafts of, 262.