Salt, of use to bees 186 Schirach's discovery 20 Scouts. _Vide_ Providers. Secretions of bees 273 Sensation of bees 258 medium of its communication 259 its seat _ib._ bees have a common sensorium _ib._ evidences of it _ib._ protracted vitality _ib._ memory 260 instances of _ib._ Reimar's opinion of 333 susceptible of instruction 261 instances of _ib._ organs of 258 antennæ 262 opinions of their offices _ib._ facts in support of them 263 palpi _ib._ uses ascribed to _ib._ Senses of bees 302 smell _ib._ instances of its acuteness 303, _et seq._ touch 307 analogy from ants 291 taste 309 hearing 310 evidences of _ib._ sight 311 not very perfect _ib._ Dr. Virey's theory 316 Sensorium 259 Separation of wax and honey 216 Shed for bees 99 Sleep of bees 295 Source of bees-wax 356 Source and nature of bees-wax; pollen formerly supposed to be the prime constituent of it 356 striking difference between them _ib._ wax proved to be a secretion from the body of the bee 362 experiments and observations of Huber, Thorley,