INDEX 



469 



Fertilisation of Orchids, Asa Gray's 

 review, ii. 313 ; Hooker's review, 

 ii. 290, 291 ; description of Acropera 

 and Catasetum in, ii. 306, 307 ; PI. 

 Miiller's Befruchtung dcr Blumen, 

 the outcome of Darwin's, ii. 382 



Fertility, Natural Selection and, i. 295 ; 

 and sterility, i. 137, 138, 295; 

 Primula, ii. 310 ; Scott on varieties 

 and relative., ii. 329 



Festuca, ii. 278 



Figs, F. Miiller on fertilisation of, 

 ii. 366 



Finmark, .Bravais on sea-beaches of, 

 ii. 176, 183 



Fir (Silver), Witches' brooms of, ii. 422 



First Principles, Spencer's, ii. 442 



Fish, Pictet and Humbert on fossil, 

 ii. 160 



Fiske, J., letter to, i, 333-4 



Fissure-eruptions, ii. 227 



Fitton, reference to his work, ii. 231 



FitzR.oy, Capt., and the Beagle voyage, 

 i. 8, 1 1 ; writes preface to account of 

 the voyage, i. 39 ; Darwin nearly re- 

 jected by, i. 194 ; letter to Times, 

 i. 129 



Flagellaria, as a climber, ii. 342 



Flahault, on the peg in Cucurbita, ii. 



427>. 428 

 Fleeming Jenkin, review of Origin by : 



see Jenkin 

 Flinders, M., voyage to Terra Australis 



by, i. 444 

 Flint implements found near Bedford. 



ii. 190 

 Flints, abundance and derivation of, at 



Down, i. 34, 35 ; ii. 165 ; Darwin on 



their upright position in gravel, ii. 



165-6 

 Floating ice, Darwin on agency of, ii. 



168 ; J. Geikie underestimates its 



importance, ii. 170; transporting 



power of, ii. 148-9, 153, 168 

 Flora, Darwin's idea of an Utopian, ii. 



374 ; Hooker's scheme for a, ii. 279, 



373-5 ; Hooker's work on Tasma- 



nian, i. 199 

 Flora antarctica, Hooker's, i. 46, 67, 



404, 405, 410, 426 

 Flora fossilis arctica, Heer's, ii. 239 

 Floras: N. American, i. 170, 429-35 ; 



Arctic, i. 155 ; British, i. 99 ; Colonial, 



i. 260; European, i. 170; French, i. 



100 ; Greenland,!. 155; Holland, i. 



100 ; India, i. 86; Japan, i. 170; 



New Zealand, i. 95, 100 ; distribution 



f i- 53 54 > f islands, i. 241, 404-7 ; 



local, i. 105. 107 ; tabulation of, i. 



99-100, 107 



Florida, A. Agassiz on Coral reefs, ii. 



197 ; Coral reefs, ii. 147, 197 

 Flourens, experiments on pigeons, ii. 



no 

 Flower, Sir William H., Letter to, i. 



251 ; on muscles of the os coccyx, ii. 



37 

 Flowering plants, possible origin on a 



Southern Continent, ii. 22, 26 ; 

 sudden appearance of, ii. 20, 21, 26 



Flowers, at Down, i. 36 ; Darwin's 

 work on forms of, i. 369 ; monstrous, 

 i. 142 ; morphological characters, i. 

 273; ii. 248, 249; regular and irregu- 

 lar, i. 98 ; cross-fertilisation in in- 

 conspicuous, ii. 414 ; ignorance of 

 botanists on mechanism of, ii. 254 



Floweys and their unbidden Guests, Dr. 

 Ogle's translation of Kerner's Schvitz- 

 mittel des Pollens, ii. 392, 413 



Flying machine, Darwin on Popper's 

 proposed, ii. 445 



Folding of strata, ii. 145 



Foliation and cleavage, ii. 199-210; 

 reference by A. Harker to work on, 

 ii. 199 



Foliation, aqueous deposition and, ii. 

 207, 209 ; Darwin considers his ob- 

 servations on cleavage less deserving 

 of confidence than those on, ii. 200 ; 

 Darwin on, ii. 200, 204 ; parallelism 

 with cleavage, ii. 203. 208, 209 ; re- 

 lation to rock-curvature, ii, 208 



Food, as determining number of species, 



i- 295 



Foraminifera, ii. 232 



Forbes, D., ii. 201, 202 ; on the Cor- 

 dilleras, ii. 144; on elevation in Chili, 

 ii. '139; on nitrate of soda beds in 

 S. America, ii. 141 



Forbes, E., biographical note, i. 52 ; 

 on flora of Azores, i. 41 1 ; on Cham- 

 bers as author of the Vestiges, i. 49 ; 

 on continental extension, i. 484 ; 

 Darwin opposed to his views on 

 continental extension, i. 234 ; Dar- 

 win's opinion of, i. 78, 95 ; article 

 on distribution, i. 51 ; ii. 223 ; on 

 continuity of land, i. 172; on plant- 

 distribution, i. 408, 461 ; intro- 

 ductory lecture as professor in Edin- 

 burgh, i. 78 ; on former lower exten- 

 sion of glaciers in Cordillera, i. 477 ; 

 lecture by, i. 53, 78 ; letter to 

 Darwin from, i. 52-5 ; on Madagas- 

 car insects, i. 282 ; on post-Miocene 

 land, i. 411; Polarity theory, i. 77, 

 84. 128, 305 ; ii. 230 ; on British 

 shells, i. 100 ; too speculative, i. 412 ; 

 on subsidence, i. 56 ; visits Down, 



