342 : INDEX. 
Salmon, experiments and observations on its rate of growth, 154, 
190, 192, 194, 199, 200. 
Sedge-Warbler in its wild state not a mocking bird, 41. 
Sewin, rate of growth of, 194, 195, 196, 198, 200, 201, 202. : 
Spiders, lines of, drawn from the spinners by currents of air, 
260, 262, 269: proved by experiment, 268: how effected, 
269: not propelled by any organic function, 270: structure 
and economy of, 290: falces and maxille of, 322, 323: 
organic modifications of, 329, 330: reproduction of the 
limbs of, 310,311. longevity of, 327, 328: function of the 
palpal organs of the males, 313: established by experiment, 
313, 315: some species of, can exist for a long period sub- 
merged in water, 325. 
——, aéronautic, aérial excursions of, observations on, 257: 
how accomplished, 260: manner in which some species 
traversed the interior of a phial, 273. 
» geometric, nets of, 276: sometimes constructed between 
distant plants growing in water, 284: how effected, 255: 
fabrication of, regulated chiefly by the sense of touch, 
287: constructive propensity of, instinctive, 289: claws 
of, 296. 
Stafford, Rey. Mr., his supposed discovery of a Cuckoo’s nest, 69, 
80. 
Swallow sometimes abandons its progeny, 87. 
Swan, Bewick’s, notice of, 152. 
Temperature, 4, 7, 9, 12; 19, 68, 98, 213. 
Theridion quadripunctatum, abstinence of, 326. 
Thomisus cristatus an aéronautic spider, 274. 
Torpidity, of animals, 10, 12, 109, 111: of spiders, 327. 
Tortrie viridana, larve of, ravages committed by, 209: singular 
spectacle presented by, 209: chrysalides of, instinct dis- 
played by, 210. 
Tree-frogs (Hyle) adhere to polished bodies by means of a 
mucous secretion, 225, 
Uterus of the Cuckoo, 60. 
Virey, M., his hypothesis respecting the ascent of aéronautic 
spiders, 265: anticipated by Dr. Lister, 266: shown to be 
untenable, 266. 
White, Rev. Gilbert, his observations on the Swift, 13, 14, 69: 
on the affection of birds for their young, 133: on the 
Northern Diver, 168. 
