INDEX 



84D 



Waterhouse, C. O.. 60 

 Wax, economic value of, 333 



— manufacture by insects, 285 

 Webs, 182 



Weevils, 83 



— apple-blossom, 83, 197 



— birch leaf rolled by, 122 



— defensive habit of, 165 



— grain, 322 



— nut, 198 



— raspberry, 1G5 

 Weismann, 257 



West wood, on Brachinus, 167 

 Wheat midge, 321 

 Wheel animalcule, 31 

 '• White ants/' See Termites 

 Will, quoted, 109, 111, 112 

 Willowherb, fertilisation of, 219 

 Wing-beats of insects, 50 

 Wingless insects, 46, 94, 95 

 Wings of insects, 1, 6, 46 



Wings, attachments of, 52 



— movement in flight, 48 et seq. 



— origin of, 34, 47 



— sound produced by vibrations of, 50 r 

 108 



— structure of, 45 



" Wireworms," 80, 193 



Wood, Rev. Theodore, 115 



Wood-ants, 293 



Wood-feeding fnsects, 193 



Wood-lice, 33 



" Woolly bear'' larva of tiger-moth, 88 



Worms, bristlefooted, 31 



Yellow fever, 327 



Yuccas, cross fertilisation by Pronuba 

 moths, 237 et seq. 



Zaitha, 272, 273 

 Zeuzera, 87 

 Zygcenidoe, 86 



4/13 



Printed by Baixanttne, Hanson 6* Co, 

 Edinburgh <£r* London 



