INDEX. 



40/ 



ORTHOPTERA. 



Orthoptera, auditory organs of, iii. 97 ; 

 musical organs of male, iii. 94, 1 1 2. 



Os coccyx, a rudimentary tail, ii. 214. 



Ostrich, American, second species of, 

 i. 249. 



Ouless, W. portrait of Mr. Darwin by, 

 iii. 195. 



Owen, Sir R., ii. 240 ; claim of priority 

 by, iii. 108 ; classification of Mam- 

 malia, ii. 266 ; Lyell's admiration of, 

 iii. 10 ; on the differences between 

 the brains of man and the Gorilla, 

 ii. 320 ; on the position of man, ii. 

 358 note ; reply to Lyell, on the 

 difference between the human and 

 simian brains, iii. 8, 9 ; hinted belief 

 in unity of origin of birds, ii. 388. 



Owls, distribution of species of, ii. 25. 



Oxford, British Association Meeting, 

 discussion at, ii. 320-323. 



Oxford discussion, Sir Joseph Hooker's 

 allegory of the, iii. 48. 



Oxlip, a hybrid between primrose and 

 cowslip, iii. 306. 



Pacific continent, ii. 72, 73, 74. 



Pacific islands, dispersal ot land-shells 

 on, ii. 109. 



Paging of separate copies of papers, iii. 

 141. 



Pakearcticand Nearctic regions, separa- 

 tion of the, iii. 230. 



Palaeontology, progress of, iii. 230. 



Paley's views, ii. 202. 



writings, study of, i. 47 ; ii. 219. 



Palgrave's 'Travels in Arabia,' iii. 40. 



Pall Mall Gazette, review of the ' Varia- 

 tion of Animals and Plants ' in the, 

 iii. 76 ; review of the ' Descent of 

 Man,' in the, iii. 138. 



Pampas, ground woodpecker of the, iii. 



153- 



Fampoean formation near Buenos Ayres, 



paper on the, iii. 2. 

 Pangenesis, iii. 72, 73, 74, 75, 78, 79, 



80, 81, 82, 83, 84, 86, 93, no, 119, 



120, 169. 

 , Dr. Lionel Beale's criticism of, 



iii. 194 ; anticipation of the theory in 



Mantegazza's ' Elementi di Igiene,' 



iii. 195. 



PENGELLY. 



Pangenesis, experiments to test the 

 theory of, by intertransfusion of blood, 

 iii. 195. 



, MS. of chapter on, submitted 



to Professor Huxley, iii. 43. 



, Professor Delpino on, iii. 



194. 



Panniculus carnosus, iii. 99. 



Papers, scientific, list of, iii. 365-370. 



Papilionacerc, papers on cross-fertilisa- 

 tion of, iii. 259, 261. 



Parallel roads of Glen Roy, paper on 

 the, i. 290. 



Parasitic worms, experiments on, iii. 

 203, 206. 



Parents, loss of, iii. 39. 



Parker, Henry, article in the Saturday 

 Review, in reply to criticisms on the 

 'Fertilisation of Orchids,' in the 

 'Edinburgh Review,' iii. 274. 



Parslow, Joseph, i. 318 note. 



Parsons, Professor Theophilus, critic- 

 isms of the ' Origin,' ii. 331, 333 ; on 

 Pterichthys and Cephalaspis, ii. 334 

 note. 



'Parthenon,' review of the 'Fertilisa- 

 tion of Orchids ' in the, iii. 270. 



Partridge, female, coloration of the, iii. 

 124. 



, mud on feet of, ii. 86. 



Parus, iii. 118. 



Parus cceruleus, sexual differences of, 

 iii. 124. 



Passijlora, fertilisation of, iii. 279. 



Pasteur, refutation of spontaneous gen- 

 eration by, iii. 24. 



Pasteur's results upon the germs of 

 diseases, iii. 206. 



Patagonia, i. 64 ; dull colouring of 

 animals in, iii. 151. 



Peach, varieties of, not subject to 

 mildew, iii. 348. 



Peacock, Rev. George, letter from, to 

 Professor Henslow, i. 191 ; letter 

 from, offering the appointment to the 

 ' Beagle,' i. 193. 



Pea-hen, coloration of the, iii. 124. 



Peat-beds, evidence from, of former 

 changes of climate in Scandinavia, 

 iii. 249. 



Pedigree of Charles R. Darwin, i. 5. 



Pengelly, Win., ii. 376. 



