VXW
- Waelchli, Dr., on colour-globules in birds, [284]
- Wallace, Mr. A. R., tabulations of variations, [63];
- on tortoiseshell butterfly of Isle of Man, [81];
- on protective colours in fishes, [83];
- on divergence among birds, [97];
- on recognition-marks, [102];
- on papilionidæ of Celebes, [165];
- on the dull colours of hen birds, [199];
- on origin of secondary sexual characters, [200];
- and A. Tylor on physiological guidance, [201];
- on preferential mating, [203];
- on reversion in grouse, [229];
- on migration in birds, [428];
- on nest-building in birds, [453];
- on the song of birds, [455];
- on materialism, [464];
- on mathematical and artistic faculties, [484], [497]
- Walker, R., on reversion in bull, [229]
- Ward, Mr. J. Clifton, on dog, [345]
- Warning-coloration, [82];
- involves perception, [351]
- Warren, Mr. Robert Hall, a dog anecdote, [344]
- Wasp, use of antennæ, [291]
- Waste and repair essential life-processes, [8]
- Water, changes of salinity in, [164]
- Water-ousel, [446]
- Waterton, Charles, [256]
- Watson, "Reasoning Power of Animals," [369]
- Webb, Dr., his operation on an elephant, [369]
- Weber, on musical discrimination, [309];
- on muscular sensation in eye, [310]
- Weir, Mr. Jenner, on nest-building in birds, [453]
- Weismann, Dr., on continuity of germ-plasm, [138];
- on distinctness of germ-plasm from body-plasm, [140];
- on meaning of second polar cell, [153];
- on protozoan origin of variations [156];
- on the introduction of senility and death, [184];
- on the distinction of birds' eggs, [189];
- on the effects of panmixia, [190];
- on acceleration, [222];
- his views applied to instinct, [438];
- the intellectual faculties, [497]
- Westlake, Miss Mabel, on the parrot, [353]
- Whiskered bat, [70]
- White, in arctic forms, [165];
- Mr. Poulton on production of, [202];
- in grouse, instance of reversion, [229]
- Wildness of birds, instinctive, [435]
- Will, F., on taste in bees, [253]
- Wilson, Sir Charles W., on wounded camels, [392]
- Wilson, Edward, measurements of bats, [63]
- Wing-bones of bats, measurement of, in illustration of variation, [63]
- Words, "understanding" of, by animals, [347]
- Wrasse, keenness of vision of, [287]