Idiot bee-eater 337 Imago 13 Implements, bee 107 Impregnation. _Vide_ Queen. Instinct 318 definition of 335 most remarkable in creatures that congregate 318 of humble-bees _ib._ all the phænomena of insect life not referable to it 322 Darwin's opinion 323 Hunter's 330 Virey's 331 Des Cartes' _ib._ Buffon's _ib._ circumstance noticed by Dr. Evans 325 by Mr. Walond 236 Huber's humble-bees 327 Amazon ants 323 bee fortifications 328 anecdote of a beetle 330 Instinct may be directed by intellect 333 modified and counteracted by intellect _ib._ instanced in birds' nests _ib._ in Sir J. Banks's spider 332 in dogs 333 Maraldi's Slug 320 Reaumur's Snail 319 Reimar's opinion of memory 333 weakened by domestication 336 strengthened by concentration _ib._ Intellect of bees 319 capable of modifying and counteracting instinct 333 capable of directing instinct _ib._ Jelly, royal 20 Jurine, Miss, dissections of 24 Knowledge distinguished from Wisdom 334