336 



INDEX. 



T. 



Tactile hairs, 93, no 



Taste, sense of, 103 



Tendons, 42 



Theory of backward flight, 143 



Thistle, 303, 304 



Thorax of bees, 120 



development of, 240 

 Tongue, how folded out of view, 99 



of Andrenidse, how folded, 100 



structure of, settled by experi- 

 ment, 97 

 Tracheae, minuteness of, 35 



moulted, 34 



of wax glands, 156 



spiral thread of, 33 

 Transition cells, 177 

 Trifoliums, 308 

 Trimorphic flowers, 300 

 Tropaeolum majus, 268, 280 



V. 



Vasa deferentia, 200 

 Vegetable marrow, 259 

 Velum of front leg, 128 

 Vesicula seminalis, 201 

 Vestibule of trachea, 150 

 Vetch, 308 



Viola tricolor, nectar cells of, 266 

 Voice of bees, 149 



W. 



Wasps encouraged by figwort, 286 



Wax at first liquid, 156 

 costly to bee, 171 

 glands, 155 

 not a fat, 160 



not derived from pollen, 158 

 of scales and of comb unlike, 



156 

 plate pincers, 130 

 pockets, 154 

 scales, 152 



scales, mastication of, 157 

 secreted by a solitary bee, 160 

 secreting cells, 155 

 secretion exhausting, 159 

 secretion, favourable condi- 

 tions for, 160 

 white, 181 

 Wild bees, nest of, 10 

 Wind a plant fertiliser, 250 

 Windfall apples, 323 

 Wing cells, 135 



vibration, rate of, 144 

 Wings, development of, 134 

 hooklets of, 137 

 of drone, worker, and queen, 



compared, 138 

 why in two pairs, 136 

 Worker egg a misnomer, 238 

 ovaries of, 238 

 superior to queen, 213 

 Workers, fertile, 223 



X. 



Xenophon and wild honey, 291 



