490 



INDEX 



ii. 283 ; 0. mono, fertilisation of, ii. 

 319 ; 0. muscifera, Lord Farrer's 

 observations on, ii. 373 ; 0. scolopax, 

 ii. 283 



Opossums, i. 115 



Oppel, service to geology, i. 374 ; 

 mentioned, i. 340 



Opuntia, Henslow describes new 

 species from Galapagos, i. 402 ■ 



Orang-utang. Rolleston on brain of. i. 

 185 ; Wallace on, i. 263 



Orange trees, grafting of, ii. 356 



d'Orbigny, on geology of S. America, 

 ii. 222 ; theory of formation of 

 Pampas mud, ii. 119; Voyage dans 

 FAmerique miridionale, ii. 117; 

 mentioned, i. 27, 75 



Orchids, adaptation in, i. 156 ; Darwin's 

 work on, i. 154, 190, 198, 200, 202 ; 

 ii. 191, 423 ; Darwin's view that 

 seedlings are parasitic on Crypto- 

 gams, i. 474 ; Falconer's estimate of 

 Darwin's work on, i. 255 ; few species 

 in humid temperate regions, i. 491 ; 

 flourish in cool temperate regions, i. 

 479 ; illustrate diversity of means to 

 same end, i. 203 ; monstrous, i. 192 ; 

 quoted as argument against species 

 arising from monstrosities, i. 242 ; 

 utilility and, i. 239 ; fertilisation 

 mechanisms of, ii. 262-6, 272-6, 337-9; 

 Brazilian, ii. 262 ; Darwin decides to 

 publish his work in book-form, ii. 

 276 ; Darwin sends copy of his book 

 to F. Miiller, ii. 346 ; Darwin under- 

 rates power of producing seeds 

 without insects, ii. 315 ; French 

 translation of Darwin's book, ii. 357 ; 

 germinative power of pollen, ii. 304 ; 

 Hildebrand's paper on, ii. 347 ; 

 nectar not excreted in some English, 

 ii. 337 ; and nectar secretion, ii. 394 ; 

 formation of ovule after pollination, 

 ii. 325 ; Scott points out error in 

 Darwin's work, ii. 302-4 ; Scott 

 on pollen-tubes of, ii. 312 ; Scott on 

 self-sterility, ii. 325, 336 ; self- 

 fertilisation in, ii. 262 ; setting of seed 

 in unopened flower, ii. 315 ; sterility 

 of, ii. 316 ; course of vessels in flowers, 

 ii. 273-9 ; wonderful contrivances 

 intelligible, ii. 273 



Orchis, flowers of, ii. 273 ; nectaries of, 

 ii. 297 ; pollinia of, ii. 269, 270 



Orchis ( Bee) (see also Ophrys apiferd), 

 Darwin's experiments on, ii. 250, 

 263, 265 ; O. pyramidalis, fertilisation 

 mechanism, ii. 266 ; 0. ustu/ata, ii. 

 265 



Order of Nature, i. 161 



Ordination, i. 193, 194 

 Organ mountains, Darwin on plants of, 

 i. 476, 478 ; glacial action on, i. 



476 

 Organisms, simultaneous change in, ii. 



233 ; amount of change in fresh water 



and marine, ii. 233 

 Organs, transition of, ii. 344 ; use of ii. 



428 

 Origin of the Fittest, Cope's, i. 341 

 Origin of Genera, Cope's work on, i. 



341 



Origin of life, i. 140 



Origin of Species, acceptance of doctrine 

 of Evolution due to the, i. 304 ; 

 Darwin's belief in the permanence 

 of the framework of the, i. 209 ; 

 Darwin's opinion of his book, i. 450 ; 

 Dawson's review of, i. 468 ; direct 

 action underestimated in the i. 300 ; 

 editions of the, i. 177, 200, 263, 264, 

 304, 312, 332, 334, 335 ; ii. 262, 

 263, 338, 355 ; errors in, i. 338, 

 339 ; Falconer's estimate of, i. 255 ; 

 Huxley's Cambridge speech, and 

 reference to the, i. 371 ; Huxley's 

 lecture on coming of age of, i. 386, 

 3S7 ; Huxley's review of, i. 2S0 ; 

 Lesquereux's articles in Silliman 

 against the, i. 260 ; publication of 

 the Abstract of, i. 118-20; publi- 

 cation by Murray of, i. 452 ; sale of 

 the, i. 123; Seemann on the, i. 476 ; 

 translation of, i. 201, 202, 272, 335 ; 

 ii. 338 ; Wallace's criticism of, i. 269 ; 

 Walsh on the, i. 249 ; Darwin on 

 necessity for modifications in the, 

 ii- 379 > review by Fleeming Jenkin, 

 ii. 379 ; review by A. Murray, ii. 30 ; 

 Owen's criticism of Darwin's His- 

 torical Sketch in 4th edition of, 

 ii. 377; Owen's review of, i. 145-7, 

 149; study of natural history revo- 

 tionised by the, ii. 36 ; valueless 

 criticism on, ii. 311 



Origin of species, Darwin's early views 

 on, i. 37, 38, 367 ; Darwin's views on, 

 i. 119, 120 ; Falconer antagonistic to 

 Darwin's views on. i. 455 ; Oxford 

 discussion (Brit, Assoc. 1S60) on the, 

 i. 157-8 ; spread of Darwin's views 

 in America, i. 157-9 



Origin of species and genera, Wallace 

 in the Nineteenth Century on, i. 384 



Original work, time taken up by, at 

 expense of reading, i. 475 



Ormerod's Index to the Geological 

 Society's Journal, ii. 144 



Ornithorhynchus, aberrant nature of, 

 i. 86 ; preservation of, i. 143 



