332 



INDEX. 



Flight of drone, why sonorous, 149 



rate of, 138 

 Flowers preventing self-fertilisa- 

 tion, 248 



sleeping, 305 



why they supply insects, 247 

 Flying backwards, 138, 141 

 Food of larva, 19, 81 

 Foot, how detached, 127 



pulvillus of, 125 

 Foraging bees, 19 

 Form of queen cell, 17, 173 

 French bean, 308 



G. 



Ganglia, chain of, 45 



number of, 50 



supplying legs and wings, 5 1 

 Gastric glands, 61 



teeth, 61 

 Genders, mixed, 208 

 Gland, appendicular, of queen, 216 



gastric, 61 



innominate, of spermathecal 

 duct, 227 



intercellular, 79 



intracellular, 77 



lubricating, of sting, 192 



mucous, of drone, 200 



of colon, 62 



olfactory, of Wolff, 43, "]■) 



poison, of sting, 188 



wax, 155 

 Glands, Nos. 1, 2, 3 and 4, uses of, 80 



Nos. 2 and 4 digestive, 8r 



Nos. 2 and 3, position of ducts 

 of, 86, 88 

 Golden rod, 303 

 Gooseberries, 324 

 Graphic method of obtaining wing 



rate, 145 

 Grubs, 19, 23, 238 



H. 



Hairs encased in wax, 156 



uses of, 31, no 

 Haviland, Mr., on drone produc- 

 tion, 210 

 Hazel nut, inflorescence of, 261 

 Head, why wedge shaped, 10 1 



Hearing of bees proved by observa- 

 tion, 108 

 organs, 107 

 Heart ot bee, 37 

 Heather, 292 

 Hermaphrodite bees, 208 



flowers, 281 

 Hexagonal facets of compound eye 

 caused by interference, 112 

 form of cells caused by inter- 

 ference, 170 

 Hickson, Dr., on eyes of insects, 



112 

 Hive bee, economy of, 15 

 Homologies between drone and 



queen, 200 

 Honey and nectar, difference be- 

 tween, 100, 263 

 bee unloading, 18, 67, 230 

 cappings imperfect, 174 

 dew, 270 

 poisonous, 289 

 sac, 18, 60 

 Hooklets of wing, 137 

 Huber, Francois, on wax, 152 



error of, with regard to queen 



cocoon, 241 

 experiment by, on source of 

 wax, 158 

 Humble bees, nest of, 12 

 Humming, 149 

 Hunter, Dr., on wax, 152 

 Huxley on multiplication of aphis, 



275 

 Hyacinth, nectaries of, 269 

 Hypodermis, 30 

 Hypo-pharyngeal plate, 77 



I. 



Imago, 24, 29 

 In-breeding prevented, 206 

 Inferiority of queen to worker, 55, 



213 

 Insects and plants mutually de- 

 pendent, 251 

 Intelligence measured by brain, 55 

 Interference makes cells hexagonal, 



170 

 Intestines, large and small, 62 

 Invagination explained, 34, 63 

 Italian bee, 222 



