480 



rNTDF-X 



HOFFMANN. 



calif ornica, 110 ; Viola tricolor, 

 123; Lobelia ramosa, 176 ; on moths 

 frequenting Petunias, 188; Fago- 

 pyrum esculentum, 228 ; self-fertili- 

 sation of Zea mays, 233 ; Corydalis 

 cava, 331; Hypecoum grandi- 

 fiorum, 331, 359; and H. pro- 

 cumbens, 331,366; sterility of Esch- 

 tcholtzia, 332 ; experiments on self- 

 fertilisation, 340 ; Corydalis lutea, 

 359 ; spontaneously self-fertilised 

 flowers, 366 ; various mechanical 

 structures to check self-fertilisa- 

 tion, 383 ; early separation of the 

 sexes, 400 ; on Aristolochia, 420 ; 

 fertilisation of the Gramineas, 445 ; 

 wide dissemination of seeds, 455 



Hoffmann, Prof. H., self-fertilised 

 capsules of Papaver somniferum, 

 108, 366; Adonis aestivalis, 129, 

 365 ; spontaneous variability of 

 Phaseolus midtiflorus, 151 ; self- 

 fertilisation of kidney-bean, 152 ; 

 Papaver alpinum, 331 ; sterility 

 of Corydalis solida, 358; Linum 

 usitatissimum, 366 ; on honey-dew 

 from a camellia, 404 



Honey-dew, 404 



Hooker, Dr., Euryale ferox and 

 Victoria regia, each producing 

 several flowers at once, 365 ; on 

 sexual relation of trees in New 

 Zealand, 414 



Horse-chestnut, 401 



Humble-bees, 419 : see Bees 



Humboldt, on the grains of cereals, 

 354 



Humming-birds a means of cross- 

 fertilisation, 371 



Hyacinth, 396 



Hybrid plants, tendency to revert to 

 their parent forms, 380 



Hypecoum grandiflorum, 331, 359 



procumbens, 331, 366 



I. 



Uteris umbellata (var. hermesiana), 

 103 ; measurement, 104-106 ; 



EERNEB. 



cross by fresh stocks, 105 ; 

 remarks on experiments, 262 ; 

 superiority of crossed over self- 

 fertilised seedlings, 289 ; early 

 flowering, 292; number of seeds, 

 315; highly self-fertile, 365; 

 prepotency of other pollen, 394 



amara, 365 



Impatiens frequented by humming- 

 birds, 371 



barbigera, 366 



fulva, 341, 367 



noli-me-tangere, 367 



pallida, 341 



Inheritance, force oi, in plants, 305 



Insects, means of cross-frrtilisation, 

 371 ; attracted by bright colours, 

 372 ; by odours, 374 ; by con- 

 spicuous flowers, 384; dark 

 streaks and marks as guides for, 

 373 ; flowers adapted to certain 

 kinds, 376 



Ipomoza purpurea, 28; measure- 

 ments, 29-49 ; flowers on same 

 plant crossed, 41-44; cross with 

 fresh stock, 45-47; descendants 

 of Hero, 47-51 ; summary of 

 measurements, 52; diagram show- 

 ing mean heights, 53 ; summary 

 of observations, 53-62 ; of experi- 

 ments, 257-259; superiority of 

 crossed, 289 ; early flowering, 

 291, 297 effects of intercrossing, 

 300; uniform colour of self-fer- 

 tilised, 308 ; seeds, 314, 322, 324 ; 

 nighly self-fertile, 368 ; prepo- 

 tency of other pollen, 399 



Iris, secretion of saccharine matter 

 from calyx, 404 



Isotoma, 176, 304 



Juglans regia, 39 1 



K. 



Kalmia lalifolia, 359 



Kerner, on protection of fiowew 



