440 



INDEX. 



E6R 



commmiication among bees, 156, 

 313 



E BEARD, M., his observations 

 as to the origin of ants' nests, 

 31 

 Eciton, the eye in, 11 



— drepnnojyTiora, their order in 

 marching, 21 



— erratica, soldiers among, 21 ; 

 their covered galleries, 65 



— legionis at play, 29 



— vastator, soldiers among, 21 ; 

 their covered galleries, 65 



Economy of labour among ants, 

 experiments as to, 240, &c. 



Eggs of ants described, 6 ; laid 

 occasionally by worker ants, 35 ; 

 by vs'orker bees and wasps, 36 ; 

 these alwaj's produce males, 37 ; 

 as to difference of sex in, 40 ; 

 of aphis, tended by ants, 69 ; 

 and hatched in captivity, 71 



Electric light, experiments on ants 

 with, 200 



Emery's observations on Colobojjsis, 

 20 



Enemies of ants, 26, 67 



Evolution of colour in flowers, 308 



Experiments, as to the adoption of 

 a queen by ants, 32 ; as to di- 

 vision of labour among ants, 23, 

 44, 324 ; as to their care of 

 aphis-eggs, 70 ; on Claviger, 90 ; 

 as to the treatment by ants of 

 injured companions, 94, 107 ; 

 with chloroformed ants, 98, 

 108-111 ; with drowned ants, 

 99 ; with buried ants, 102 ; as 

 to treatment of stranger ants, 

 104, 119, 124, 333 ; as to mode 

 of recognition, 108 ; with in- 

 toxicated ants, 111-118 ; as to 

 power of recognition among 

 ants, 119, 333 ; and among bees, 

 126 ; with ant-pupa3 removed 

 from nest, 129-147 ; on sistor- 

 ants brought up separately, 147- 



FOO 



152; as to power of communi- 

 cation among ants, 160-181, 

 344-376 ; among bees, 274, 401 ; 

 among wasps, 311, 415 ; as to 

 perception of colour, 186 ; with 

 coloured solutions, 194 ; with 

 spectrum, 198 ; with the electric 

 light, 201 ; as to ultra-violet 

 rays, 200-220 ; witli magnesium 

 spark, 207 ; as to sense of hear- 

 ing among ants, 222 ; among 

 bees, 290 ; as to sense of smell 

 among ants, 233, 258 ; among 

 bees, 288 ; as to ant intelligence, 

 237 ; as to economy of labour, 

 241 ; as to ingenuity among 

 ants, 243-6 ; as to their power 

 of finding their way, 250 ; as 

 to means of tracking, 168, 383, 

 387 ; as to sense of direction 

 among ants, 260 ; among bees, 

 278 ; and among wasps, 321 ; as 

 to guidance of ants by sight, 

 266 ; as to the behaviour of 

 bees in a strange hive, 281 ; as 

 to their compassion, 286 ; as to 

 their colour sense, 291 ; and 

 their preference of certain 

 colours, 302 ; as to colour sense 

 among wasps, 316 

 Expulsion of ant from nest, 98 

 Eyes of two kinds in ants, 10 ; 

 compound, 182 ; various de- 

 velopments of, 183 



FACETS of the eye in ants, 

 number of , 1 1 ; described, 1 82 



Feeding, loss of instinct of, 76, 83, 

 87 



Fertilisation of plants by insects, 

 50, 291 



Fighting among ants, different 

 modes of, 17 



Flowers, their defences against 

 unj^rofitable insects, 51-55 ; in- 

 fluence of bees on their develop- 

 ment, 291 ; paucity of blue, 308 



Food of ants, 25, 63 ; its effect in 



