INDEX 



553 



Virus, antibodies against, 109 

 as early life form, 144-145 

 Vision, see Sight 

 Visual purple, see Rhodopsin 

 Vitamins, 80 



A, 104 



B, 85 



C, 85 



D, 255 



manufacture of, 84-85, 104 

 Volcanic action, 479 



See also Islands, volcanic 

 Volpe, E. P., 476, 483 

 Volvox, 77. 72 

 von Baer, K. E., 47. 50, 69 

 von Koenigswald, 239 



Waddington. C. H.. 404, 422, 423, 424, 



425.426.466,476.482.483 

 Wald, G., 91, 104, 105. 106, 108 

 Walker, B. W.. 477, 482 

 Wallaby, hare, 264 

 Wallace, A. R., 278. 305 

 Walrus. 28 

 Walter. H.E., 41, 44 

 Wapiti, 264 

 Warbler. 292 



Warmbloodedness, see Temperature 

 Warning displays, 493 

 Wart hog. 423 

 Washburn. S. L.. 227, 257 

 Wasp, 370 

 Waste products, see Ammonia; Carbon 



dioxide; Nitrogenous wastes 

 Water, composition of, 80 



conservation of by living organisms, 

 92-93. 94, 95-100, 156, 163, 170 

 Watusi tribe, 252 



Weidenreich, P.. 231. 238, 239, 257 

 Weiner, J. S.. 140, 142 

 Weismann, 342 

 Wemyss, C. T., Jr., 121, 126 

 Westcott, P. W., 373, 374 

 Whale, 28, 220, 341 



classification of. 116 



convergent evolution in, 30 



limb buds in, 75 



limbs of, 23-24, 75 



skeleton of, 24 



teeth of, embryonic, 75 



vestiges in, 24, 43, 44, 75 

 See also Dolphin 



Wheat, 451 



White, F. N., 423, 426 



Wiener, A. S., 122, 123, 126 



Wiens, A. L., 121. 125 



Wilhelmi. R. W.. 103. 108 



Wilkie. Wendell, 521 



Wilson, E. O., 323, 324, 329, 487, 506 



Wilson. M., 222, 226 



Wind, transportation by, 284 



Wings, of bat, 21-22, 26, 30, 504-505 



of bee, 30 



of birds, 21-22, 25-26, 30, 187-188 



of insects, 21, 25-26, 30 

 See also Limbs 

 Wolf, 28,421 



Tasmanian, 263, 264 

 Wolfe. H. R.. 121. 125 

 Wombat, 192. 262. 26i 

 Wood. A. E.. 120. 126 

 Wood. H. E., 504 

 Woodchuck. 117, 190 

 Woodpecker, 294, 296 

 Woods, K. R., 121. 126 

 Worm burrows, 137, 146, 147 

 Worms, see Annelida; Platyhelminthes 

 Wright, Seth. and Ancon ram, 337, 347 

 Wright. Sewall, 349. 441, 448, 449, 463, 

 470, 473, 483, 489, 490, 507 



Xenophanes, 3 



X rays inducing mutations, 339, 390, 451, 



455 



Yolk, egg, 168-169 



Yolk sac, of birds and reptiles. 55, 769 

 of human embryo, 52, 53, 54-55, 58, 

 59, 63, 191 



Zangerl, R., 31,44 



Zebra, 206, 274-275, 323 



Zeuner, F. E., 142 



Zimmerman. E. C, 284, 285, 286, 287, 



305. 490, 507 

 Zinjanthropns, 235 



boisei, 237 

 Zoogeography, see Geographic distribu- 

 tion 

 Zuckerman, S., 232, 257 

 Zygote, 385, 399 



