The Making of Species 
Thrush, 203, 207, 355 
Tiger, 334 
Tit, 245 
Toad, 210, 219, 241 
Toad-flax, 56 
Tortoise, 222 
Trefoil, 274 
Trochilium, 229 
Trogon, 62 
Tropidonotus piscator, 220 
Troupial, 244, 281, 284 
Tsetse-fly, 352 : 
Tupaia, 180, 216 
T. ellioti, 216 
Turbit, 72, 91-3 
“‘Turbit, The Modern,” 91 
Turkey, 95, 363 
Turnspit dog, 59 
Turtur cambayensts, 333 
T. suratensis, 333 : 
T. visorius, 33, 123, 126 
Tylor, Mr Alfred, 287 
UNGULATES, 67 
Unilateral transmission, 341 
Unit characters, 148-52 
Oria grylle, 245 
U. lacrymans, 58 
Urial, 120, 130, 131 
Urodynamis tritensis, 243 
VALEZINA, 103 
Vanessa levana, 154 
V. prorsa, 154 
Vapourer moth, 215 
Variation, 52-110 
cause of, 59-60 
—— continuous, 56, 69, 76, 105 
—— definite, 55 
—— determinate, 55 
— discontinuous, 43, 56, 72, 73, 
76, 78, 79, 87, 105, 106, 133, 
159, 295 _ 
—— germinal, 106-10, 133 
—— indefinite, 55, 59 
— somatic, 
Viola, 260 
V. tricolor, 260 
Volckamer, 86 
Vulture, 282 
WAGGETT, 12 
Wagner, 369, 372 
Wagtail, 122, 203 
Wallace, 3, 10, 13, 14, 25, 26, 35- 
42, 53, 112, 114, 116, 117, 171, 
175, 177, 183, 184, 207, 213, 
228, 230, 251, 253, 256, 287, 
296, 308, 321-7, 343, 372, 377 
Wallaceian school of biologists, 14, 
24, 25, 47, 192, 210, 251, 346, 
347, 366, 377 
Wallaceism, 172, 202 
Walrus, 190 
Warblers, British, 315, 332 
Warning colours, 173, 176, 198, 
212-26 
Wasp, 174, 178, 179, 214, 227 
Wasp-beetle, 229 
Water-rail, 251 
Waxbill, blue-bellied, 104 
Weasel, 190 
Weaver, red-billed, 98 
Weber, 86 
Weir, Mr Jenner, 299 
Weismann, 25, 106, 107, 151, 154 
Weka rail, 365 
‘¢ Westminster Review,” 112 
Weston, G. E,, 127 
Whale, 42, 185, 190, 193 
Wheatear, 253 
Whinchat, 253 
Wiesner, 151 
Wilson, Prof. E. B., 166 
Winter coat, 188 
Wolf, 48, 130, 185, 192 
Wonder horse, 95, 96 
Woodpecker, 102 
Wright, Mr, 304 
Wyman, Professor, 357 
X-ELEMENT, 165 
Yak, 120 
Yarrow, 268 
‘© Vear-book of the Smithsonian 
Institution,” 184 
Yerbury, Col., 239 
Youatt, 63 
ZEBRA, 1096 
Zebu, 120 
Zocher & Co., 56 
Zoological Gardens, Lahore, 309 
——, London, 104, 119, 126, 130, 
206, 304, 316 
Zoological Society of Lendon, 330 
Zygana filipendule, 102 
400 
