452 



MONSTROSITIES. 



INDEX. 



OSTRICH. 



Monstrosities, 33. 



Moquin-Tandon, on sea-side plants, 

 107. 



Morphology, 382. 



Morren, on the leaves of Oxalis, 197. 



Moths, hybrid, 240. 



Mozart, musical powers of, 206. 



Mud, seeds in, 345. 



Mules, striped, 129. 



Miiller, Adolf, on the instincts of the 

 cuckoo, 213. 



Miiller, Dr. Ferdinand, on Alpine 

 Australian plants, 337. 



Miiller, Fritz, on dimorphic crus- 

 taceans, 35, 233. 



H on the lancelet, 99. 



, on air-breathing crustaceans, 



152. 



, on climbing plants, 197. 



, on the self-sterility of orchids, 



238. 



— , on embryology in relation to 

 classification, 368. 

 -, on the metamorphoses of crus- 



taceans, 390, 395. 

 -, on terrestrial and fresh-water 



organisms not undergoing any me- 

 tamorphosis, 394. 



Multiplication of species not indefi- 

 nite, 101. 



Murchison, Sir R., on the forma- 

 tions of Russia, 272. 



, on azoic formations, 286. 



, on extinction, 293. 



Murie, Dr., on the modification of the 

 skull in old age, 149. 



Murray, Mr. A., on cave-insects, 111. 



Mustela vison, 138. 



Myanthus, 372. 



Myrmecocystus, 231. 



Myrmica, eyes of, 232. 



N. 



Nageli, on morphological characters, 



170. 

 Nails, rudimentary, 400. 

 Nathusius, Von, on pigs, 159. 

 Natural history, future progress of, 



426. 



selection, 62. 



system, 364. 



Naturalisation of forms distinct from 



the indigenous species, 89. 



Naturalisation in New Zealand, 163. 

 Naudin, on analogous variations in 



gourds, 125. 



, on hybrid gourds, 258. 



, on reversion, 260. 



Nautilus, Silurian, 286. 

 Nectar of plants, 73. 

 Nectaries, how formed, 73. 

 Nelumbium luteum, 346. 

 Nests, variation in, 208, 228, 234. 

 Neuter insects, 230, 231. 

 Newman, Col., on humble-bees, 57. 

 New Zealand, productions of, not 



perfect, 163. 



, naturalised products of, 309. 



, fossil birds of, 310. 



, glaciers of, 335. 



, crustaceans of, 338. 



, algse of, 338. 



, flora of, 354. 



, number of plants of, 374. 



Newton, Sir I., attacked for irre- 



ligion, 421. 

 , Prof., on earth attached to a 



partridge's foot, 328. 

 Nicotiana, crossed varieties of, 258. 

 , certain species very sterile, 



243. 

 Nitsche, Dr., on the Polyzoa, 193. 

 Noble, Mr., on fertility of Rhodo- 

 dendron, 239. 

 Nodules, phosphatic, in azoic rocks, 



287. 



0. 



Oaks, variability of, 40. 



(Enonis, small imperfect flowers of, 



173. 

 Onites appelles, 108. 

 Orchids, fertilisation of, 154. 

 , the development of their 



flowers, 195. 



forms of, 372. 



Orchis, pollen of, 151. 

 Organisation, tendency to advance, 97. 

 Organs of extreme perfection, 143. 



, electric, of fishes, 150. 



of little importance, 156. 



, homologous, 382. 



, rudiments of, and nascent, 397. 



Ornithorhynchus, 83, 367. 



, mamma; of, 190. 



Ostrich not capable of flight, 180. 



