528 



STUDIES IN SEEDS AND FRUITS 



Ulex europseus (Gorse) : 

 (a) Seed : impermeability, 93 ; water- 

 contents and absorptive capacity, 

 118, 13s ; shrinking process, 26, 

 41, 252, 321 ; coloration of seed- 

 coats and embryo, 250-252, 387, 

 390, 394 ; abortion of ovules, 

 354, 365, 366. 

 (6) Fruit : the ripening, drying, and 

 dehiscing stages, 250-253 ; dry- 

 ing process, 262, 321, 326 ; 

 dehiscence, 251-253, 257, 288; 

 proportions of pericarp and 

 seeds, 298, 326, 338. 



Uloth : on acorns germinating in ice, 



435- 

 Utricularia, 419, 420, 437. 



Van Tieghem : on seed-swelling, 43, 

 44 ; on changes in seed-weight, 

 236, 237, 240, 493 ; on detached 

 embryos, 421. 

 Variable seeds : use of the term, 90, 91, 

 III; list of seeds, 94 ; hygro- 

 scojjicity, 165, 178, 226 ; behaviour 

 in time, 226 ; water-contents, 135- 

 137, 213 ; absorptive capacity, 122, 

 123, 135-137 ; shrinking and swell- 

 ing regime, 203, 210-214, 223, 224 ; 

 drying of seeds swollen for 

 germination, 466-471. 

 Vegetative reproduction, 446, 448, 459, 



506-508. 

 Veronica, 387, 408, 489. 

 Vicia, species, 27, 58, 236. 

 Vicia. Cracca, 387, 390, 394. 

 Vicia sativa and Vicia sepium : 



(3) Seed : degree of permeability, 94, 

 96 ; water-contents and absorp- 

 tive capacity, 137 ; shrinking 

 process, 26, 41, 321 ; propor- 

 tions of coats and kernel, 189 ; 

 coloration, 376, 377, 382, 387, 

 390, 394; failure of ovules and 

 seeds, 345-349, 3^5, 366 ; experi- 

 ment dispensing with the rest- 

 period, 421. 



Vicia sativa and Vicia sepium — conM. ';. 

 (i) Fruit : drying process, 262, 321, 

 326 ; dehiscence, 288 ; propofi' 

 tions of pericarp and seeds, 298, ' 

 326, 338. 

 Vigna luteola, 26, 93, 189, 387. 

 Viola tricolor, 263, 273, 274, 327, 409. 

 Vivipary ; incidental references, 32, 39, 

 53, 329 ; general treatment, 417- 

 439 ; illustrated by the Ivy (Hedera 

 Helix), 269, 272, 427-432, 439; 

 illustrated by acorns (Quercus 

 . Robur), 269, 272, 309-315, 432-436, 

 439 ; illustrated by Crinum, 436, 

 504-506 ; experiments inhibiting 

 the rest-period, 421. 



Waldron, 63. 

 Warburg, 147. 

 Ward, T., 447. 

 Warde, Mrs, 397. 



Water-contents of fruits, 258-272, 273- 

 292, 318-329, 477, 478, 483-486, 



494, 498--503- 

 of seeds : water of hygroscopicity, 

 151-157, 180-186, 489; water of 

 vitality, 152-156, 180-186, 489; 

 method of determining the water- 

 contents of a seed in its pre- 

 resting, resting, and early germinat- 

 ing stages, 509. 



Weisse Bohnen, 27, 465. 

 Riibe, 27. 



Welwitschia, 446, 450, 451, 458, 459. 



Wheat, 27. 



White, Miss, 66-68, 106. 



Wings of seeds, 188, 190, 191, 195-198, 

 221. 



Wistaria, 66. 



Yam-sticks, 508. 

 Yucca aloifolia, 508. 



Zea Mays (Maize), 27, 421. 

 Zuckerriibe, 27. 

 Zygophyllese, 487. 



Note. — See under Albuminous Seeds in index. Much importance attaches to the dis- 

 covery by Dr Stapf of four species of bamboos with exalbuminous seeds, one of them viviparous. 

 {Nature, May 17, 1906.) 



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