Valiant, L., on nidification of sociable grosbeak, 296

Venn, on association of ideas in parrot, 267, 268

Vigot, Dr., on snake finding way home, 262

Villiers, De, on instincts of larvæ of bombyx moth, 240

Vindictiveness,
of birds, 277, 278, and 318-25;
of horse, 330, 331;
of elephant, 387-9;
of monkeys, 478, and 484-96

Virchow, on difficulty of distinguishing between instinct and reason, 12

Vogt, Karl, on duration of memory in ants, 41;
bridge-making, 136

Vultures, finding carrion by sight and not by smell, 286, 287;
intelligence, 314




Wakefield, P., on intelligence of goats, 337, 338

Wallace, A. R., on philosophy of birds'-nests, 298-300

Warden, on frogs going straight to nearest water, 254

Wasp-mason, 180;
butcher, 180, 181;
sphex, 181;
hunting, 193, 194;
common, tamed by Sir John Lubbock, 153

Wasps, sense of direction in, 147;
teaching themselves, 154;
killing larvæ, 167, 168;
making cells, 180;
instincts of neuters, 181;
recognising persons, 188;
coming out of small aperture backwards, 192, 193;
struggles with ants for secretion of frog-hoppers, 194, 195;
dismembering heavy prey for convenience of carriage, and mounting eminences for same purpose, 195, 197

Wasser, on nidification of puffins, 291

Waterhouse, on hexagonal form of bee's cell, 173

Water-rail, its mode of escape, 289

Waterton, on nidification of swan, 295, 296

Watson, on spiders weighting their webs, 221;
cock killing hen on her hatching out eggs of other birds, 278;
intelligence of rats, 360-62;
vindictiveness of elephant, 389;
elephant enduring surgical operation, 399;
intelligence of sheep-dogs, 448;
of cattle-dogs, 449

Weasel, 346, 347

Weaver, nidification of, 293

Web, see Spider

Web-building, see Spiders

Webb, Dr., performing operation on elephant, 399

Weber, Professor E. H., on spiders weighting their webs, 221

Wedgwood, the Rev. R. H., on memory of horse, 330

Westlecombe, on reasoning power of a dog, 462, 463

Westropp, on intelligence of bear, 352

Westwood, on instinct of caterpillars, 288

Weygandt, on robber-bees, 170

Whale, maternal affection of, 327;
attacks on, by sword- and thresher-fish, 252, 253

Whately, Archbishop, on cat ringing bell, 423

White ants, see Termites

White, the Rev. Gilbert, on nests of harvesting-mice, 365;
on nidification of house-martin, 292, 293

White, W., on intelligence of snails, 26

White, the Rev. W. W. F., on sympathy of ants, 49;
keeping pets, 84;
burying dead, 92, 93

White-headed eagle, see Eagle

Wildman, his alleged training of bees, 189

Wilks, Dr. S., observations on talking of parrot, 267, 268;
on dog recognising a portrait, 455

Williams, on intelligence of sheep-dogs, 448

Williams, B., on cunning of sheep-killing dogs, 450, 451

Wilson, on memory of crow, 266

Wilson, Dr. Andrew, on reasoning power of a dog, 460

Wilson, Charles, on intelligence of swallows, 318

Wilson, Dr. D., on elephant enduring surgical operation, 399

Winkell, Dietrich aus dem, on intelligence of fox, 428

Wolf, 426-36; avoiding gun-traps, 431;
drawing up fish-lines to take fish, 431;
collective instinct in hunting, 433, 436

Wolverine, 347-50

Wood, Rev. G. J., on spiders weighting their webs, 221

Woodcock, conveying young on back, 289

Woodpecker, ant-eating, its instinct of storing food, 285;
nidification, 293

Words, understanding of,
by bees, 189;
by talking birds, 267-9

Worms, apparent intelligence of, 24

Wright, his portrait-painting recognised by a dog, 454-5



Youatt, on pigs learning to point game, 340

Young, the Rev. Charles, on emotions and intelligence of elephant, 390-92

Young, Miss E., on dog finding his way about by train, 468

Yule, Captain, on elephants dying under emotional disturbance, 395