426 



MCLES. 



INDEX. 



OWEN. 



Mules, striped, 121. 



Muller, Adolf, on the instincts of the 

 cuckoo, 198. 



Muller, Dr. Ferdinand, on Alpine 

 Australian plants, 317. 



Muller, Fritz, on dimorphic crus- 

 taceans, 33, 217. 



, on the lancelet, 93. 



, on air-breathing crustaceans, 



142. 



, on climbing plants, 184. 



, on the self-sterility of orchids, 



223. 



, on embryology in relation to 



classification, 345. 



, on the metamorphoses of crus- 

 taceans, 366, 371. 



, on terrestrial and fresh-water 



organisms not undergoing any 

 metamorphosis, 370. 



Multiplication of species not indefi- 

 nite, 95. 



Murchison, Sir R., on the forma- 

 tions of Eussia, 254. 



, on azoic formations, 269. 



, on extinction, 275. 



Murie, Dr., on the modification of 

 the skull in old age, 139. 



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

 104. 



Mustela vision, 129. 



Myanthus, 349. 



Myrmecocystus, 215. 



llyrmica, eyes of, 217. 



Nageli, on morphological characters, 



159. 



Nails, rudimentary, 376. 

 Nathusius, Yon, on pigs, 149. 

 Natural history, future progress of, 



400. 



selection, 57. 



system, 342. 



Naturalisation of forms distinct from 



the indigenous species, 83. 

 Naturalisation in New Zealand, 152. 

 Naudin, on analogous variations in 



gourds, 117. 

 . on hybrid gourds, 241. 



, on reversion, 243. 



Nautilus, Silurian, 268. 

 Nectar of plants, 67, 68. 

 Nectaries, how formed, 68. 

 Nelumbium luteum, 325. 



Nests, variations in, 194, 213, 219. 



Neuter insects, 215, 216. 



Newmau, Col., on humble-bees, 53. 



New Zealand, productions of, not 

 perfect, 152. 



, naturalised products of, 290. 



, fossil birds of, 292. 



, glaciers of, 315. 



, crustaceans of, 317. 



, algae of, 317. 



, number of plants of, 326. 



, flora of, 333. 



Newton, Sir I., attacked for irre- 

 ligion, 396. 



, Prof., on earth attached to 



a partridge's foot, 308. 



Nicotiana, crossed varieties of, 242. 



, certain species very sterile, 227. 



Nitsche, Dr., on the Polyzoa, 180. 



Noble, Mr., on fertility of Rhodo- 

 dendron, 223. 



Nodufes, phosphatic, in azoic rocks, 

 269. 



Oaks, variability of, 37 



Onites apelles, 101. 



Ononis, small imperfect flowers of, 



161. 



Orchids, fertilisation of, 144, 145. 

 , the development of their 



flowers, 182. 



, forms of, 349. 



Orchis, pollen of, 141. 

 Organisation, tendency to advance, 



91. 

 Organs of extreme perfection, 134. 



, electric, of fishes, 140. 



of little importance, 146 



, homologous, 359. 



, rudiments of, and nascent, 



372. 

 Ornithorhynchus, 78, 344. 



, mammae of, 177. 



Ostrich not capable of flight, 168. 

 , habit of laying eggs together, 



201. 



, American, two species of, 298. 



Otter, hab. r '.3 of, how acquired, 129. 



Ouzel, water, 133. 



Owen, Prof., on birds not flying, 100. 



, on vegetative repetition, 110. 



, on variability of unusually 



developed parts, 111. 

 , on the eyes of fishes, 136. 



