Subject Index 



861 



Vertebra (c) — (Continued) 



intersegmental, 111 



lumbar, 4, 109, 596 



occipital, 124 



sacral, 4, 109, 133, 138, 447, 468, 515, 596 



spinous processes of, 4, 109 



thoracic, 4, 109, 596 

 Vertebral artery, 592 



axis, 133, 134, 138 



canal, 106, 173 



column, 3, 4, 91, 95, 106-111, 109, 112, 

 113, 115, 133, 134, 138, 144, 169, 



173, 175, 281, 455, 468, 470, 514, 

 515 



of mammals, 596-600 



processes, 108, 109 



rib, 586 

 Vertebrarterial foramen, 592 

 Vertebrate(a), 393, 394, 404, 405, 407-410 



aquatic, 369, 408, 636 



classification of, 409 



conclusions from study of, 785—819 



definition of, 11, 12 



differences among, 407-409 



embryonic development of, 790 



evolution of, 243, 771-784, 791-811 



general features of, 11-23 



invertebrates contrasted with, 17, 82, 

 101, 142, 195, 198 



lower and higher, 503 



organogenesis in, 271-281 



pattern of, 227, 228, 229, 230 



phylogeny of, 789 



reasons for studying, 1-7 



sections of, 17, 21 



specialization of, 503-505 



terrestrial, 636 

 Vesalius, 337 

 Vesicle(s) blastodermic, 264, 265 



brain, 144, 207 



optic, 6, 200 



seminal, 663 

 Vesicular glands, 663-665 

 Vessels (see also Arteries, Veins, Capil- 

 laries, Blood-vessels) 



lymphatic, 30, 63, 65, 67, 68 

 Vestibular ganglions, 166 



glands, 664 



trunk, 166, 715 

 Vestibule, 199, 658, 661 

 Vestibulospinal tract, 170 

 Vestiges, 380 

 Vexillum, 506 

 Vibrissae, 669 

 Vidian nerve, 178 

 Villi of intestine, 28, 30 



chorionic, 242, 292, 293, 294 



placental, 294 

 Viscera, 494 

 Visceral, 22, 89, 96, 97, 98, 99, 154-157, 



174, 175, 182, 183, 213-215, 218, 

 274, 275, 285, 609, 610 



arches, 96, 107, 115, 118, 119, 122, 136, 



138, 605, 607, 623, 695 

 axis, 136, 137, 138 



Viscera] — (Continued) 



differences, 609, 610 



layer, 269, 270, 278, 281, 283 



muscles, 89, 96, 97, 154, 156 



nerve fibers, 171 



nerves, 160, 182 



skeleton, 118, 125, 126, 138, 418, 606 

 Vision, binocular, 605 



color, 682 

 Visual aids, 701 



cells, 196 

 Vitelline membrane, 233, 234, 235, 236, 

 249, 256 



vessels, 241, 295 

 Vitreous body, 202 



humor, 203 

 Viverra, 747 

 Viverridae, 747 



Viviparity, 238, 239, 241, 242, 244, 245 

 Viviparous reptiles, 295 

 Vocal cords, 614 



folds, 614 



organs, 525-527 

 Voluntarv muscles, 156, 157, 213, 214, 215 

 Vomer (s), 122, 125, 127, 137 

 Vomeronasal organ, 475, 678 

 Vorticose vein, 203 

 Vultures, 546 



W 



Wallaby (ies), 734, 735 

 Walrus, 230, 750 

 Warblers, 553 



Warm-blooded animals, 410 

 Warmth, 193 



Water, in relation to pituitary, 226 

 Wax glands, 577, 693 

 Weasel, 747 



Weberian ossicles, 433, 434 

 Whale(s), 56, 124, 133, 134, 234, 244, 294, 

 367, 368, 615, 764 



baleen, 767 



beaked, 764, 765 



bottlenose, 765 



bowhead, 765 



finback, 765 



flipper, homologies of, 373 



humpback, 765 



right, 765, 766 



rorqual, 765 



sperm, 765, 766 



toothed, 765, 766 

 Whalebone, 765 

 Wharton's duct, 636 

 Whippoorwills, 551, 553 

 White matter, of nervous organs, 152, 153, 



184 

 Windpipe (see Trachea) 

 Wirsung's duct, 32 

 Wishbone, 511 

 Wolf, 747 



Tasmanian, 732, 733 

 Wolffian duct (mesonephric duct), 80, 81, 



82, 83, 87, 88, 280, 283, 650-656 



