INDEX 



1185 



Vocal sounds, pitch, 552 

 production of, 551 

 quality, 552 

 resonant, 554 

 Voice, 540 



breaking of, 552 



chest, 551 



falsetto, 551 



singing, range, 553 

 Volkmann's hemodromometer, 404 

 Voltaic cell, polarization in, 58 

 Voluntary muscle contraction, 73 



reactions, 110 

 Vomiting, 1011 



center for, 641, 1012 



of pregnancy, 1139 

 von Basch sphygmomanometer, 366 

 Vowels, sound production of, 554 



Waldeyer's neuron doctrine of nervous 

 system, 565 

 arguments in favor, 567 

 "Waller's ergograph or dynamograph, 

 81, 82 

 law of nerve degeneration, 119, 621 

 Warm spots of skin, 742 

 Water, absorption of, 1027 



from urinary tubules in urine 

 secretion, 1071 

 calorimeter, 1090 

 Water-rigor of muscle, 93 

 Wave, antiperistaltic, 1014 

 peristaltic, 1014 

 regular, 1014 

 theory of nerve conduction, 133 

 Weber's law, 733 



theory of muscle contraction, 49 

 Welker's method of determining quan- 

 tity of blood, 226 

 Welker and Hoppe-Seyler's chrono- 

 metric method of determining hemo- 

 globin, 190 

 Wendt's tetanus, 146 



76 



Wernicke's sensory aphasia, 696 

 Whartonian jelly, 1142 

 Whey, 901 

 Whispering, 553 



White blood corpuscles, 199. See also 

 Blood corpuscles, white. 



light, 879 



matter, cerebral, general arrangement, 

 658 

 of spinal cord, functional basis, 

 608 



of eye, 805 



visual, 843 

 Winking reflex, 599 

 Wintrich's modification of Hutchinson's 



spirometer, 479 

 Wirsung, duct of, 932 

 Wisdom teeth, 1001 

 Word-blindness, 688, 696 

 Word-deafness, 688, 689 

 Work-adder, diagram of, 96 

 Wrist jerk, 599 



Xanthin, 1051 



Xanthinoxidase, 513 



X-ray bismuth study of stomach, 1008 



Yawning, 482 



reflex, 593 

 Yellow spot, 836 



visual, 843 

 Young-Helmholtz theory of color vision, 



886 



Zollner's lines, 878, 879 



Zona pellucida, 1130 



Zuntz's indirect method of determining 



cardiac output, 302 

 Zwaardemaker's olfactometer, 745 

 Zymase, 988 

 Zymogen, 990 



granules, 909 

 Zymoplastic substance, 222 



