528 



INDEX 



Vermetus, veliger stage of, 150 

 Vertebrate kingdom, antiquity of, 9 

 Vertebrates, 



pigmentation of eyes of, 68 



pigmentation of lateral eyes of, 77 

 Vertebrates, pineal-system of, 180 

 Vesicular seminales, enlargement of in 



pinealectomized rats, 423 

 Vespa, 379 



Vestigial structures, 46 

 Viper, 284 

 Visual 



cells, 53 

 large, 53 

 short, 53 



field(s), 452, 453, 461, 463 



paths in Cephalopods, 166 



rods, long, 53 

 short, 53 

 Vitreous, 



absence of, 163 



body, 10, 14, 48, 164, 258 



cells, 10, 14, 53, 368 



layer, 14, 133, 368, 370, 371 



lens, 49, 368 



marginal body, 131 



mass, 53 



Voice, 



deepening of, 439 

 premature change of, 428 



Vomiting, 438, 449, 452, 543, 459 



Van Wagenen's operation, 446, 447, 448 

 Water flea, 105, 109 

 Whale, rudimentary teeth of, 46 

 Wheel animalcules, eyes of, 88 

 Whelk, 151 



X-ray 



therapy, post-operative, 448, 454, 459, 

 460 



examination, stereoscopic, 459 

 Xylocopa senilis, 342 



Yungia aurantiaca, paired ocelli of, 84 



Zoarces vivipara, 294 

 Zooids, of Cephalodiscus, 173 

 Zonuridse, 275 



Printed in Great Britain by William Clowes & Sons, Limited, Beccles,for 

 Bailliere, Tindall & Cox 



