VAILLANT, Le, on fascination by tree-snake,263,264Valiant, L., on nidification of sociable grosbeak,296Venn, on association of ideas in parrot,267,268Vigot, Dr., on snake finding way home,262Villiers, De, on instincts of larvæ of bombyx moth,240Vindictiveness,of birds,277,278, and318-25;of horse,330,331;of elephant,387-9;of monkeys,478, and484-96Virchow, on difficulty of distinguishing between instinct and reason,12Vogt, Karl, on duration of memory in ants,41;bridge-making,136Vultures, finding carrion by sight and not by smell,286,287;intelligence,314WAFER, on monkeys hammering oyster-shells with stones,481Wakefield, P., on intelligence of goats,337,338Wallace, A. R., on philosophy of birds'-nests,298-300Warden, on frogs going straight to nearest water,254Wasp-mason,180;butcher,180,181;sphex,181;hunting,193,194;common, tamed by Sir John Lubbock,153Wasps, 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,195,197Wasser, on nidification of puffins,291Waterhouse, on hexagonal form of bee's cell,173Water-rail, its mode of escape,289Waterton, on nidification of swan,295,296Watson, 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,449Weasel,346,347Weaver, nidification of,293Web,seeSpiderWeb-building,seeSpidersWebb, Dr., performing operation on elephant,399Weber, Professor E. H., on spiders weighting their webs,221Wedgwood, the Rev. R. H., on memory of horse,330Westlecombe, on reasoning power of a dog,462,463Westropp, on intelligence of bear,352Westwood, on instinct of caterpillars,288Weygandt, on robber-bees,170Whale, maternal affection of,327;attacks on, by sword- and thresher-fish,252,253Whately, Archbishop, on cat ringing bell,423White ants,seeTermitesWhite, the Rev. Gilbert, on nests of harvesting-mice,365;on nidification of house-martin,292,293White, W., on intelligence of snails,26White, the Rev. W. W. F., on sympathy of ants,49;keeping pets,84;burying dead,92,93White-headed eagle,seeEagleWildman, his alleged training of bees,189Wilks, Dr. S., observations on talking of parrot,267,268;on dog recognising a portrait,455Williams, on intelligence of sheep-dogs,448Williams, B., on cunning of sheep-killing dogs,450,451Wilson, on memory of crow,266Wilson, Dr. Andrew, on reasoning power of a dog,460Wilson, Charles, on intelligence of swallows,318Wilson, Dr. D., on elephant enduring surgical operation,399Winkell, Dietrich aus dem, on intelligence of fox,428Wolf,426-36;avoiding gun-traps,431;drawing up fish-lines to take fish,431;collective instinct in hunting,433,436Wolverine,347-50Wood, Rev. G. J., on spiders weighting their webs,221Woodcock, conveying young on back,289Woodpecker, ant-eating, its instinct of storing food,285;nidification,293Words, understanding of,by bees,189;by talking birds,267-9Worms, apparent intelligence of,24Wright, his portrait-painting recognised by a dog,454-5YARRELL,on fish,246;on intelligence of hare,358-9Youatt, on pigs learning to point game,340Young, the Rev. Charles, on emotions and intelligence of elephant,390-92Young, Miss E., on dog finding his way about by train,468Yule, Captain, on elephants dying under emotional disturbance,395
VAILLANT, Le, on fascination by tree-snake,263,264
WAFER, on monkeys hammering oyster-shells with stones,481
YARRELL,on fish,246;on intelligence of hare,358-9