INDEX. 



Urea, diuretic action of, 169 

 Ureter, movements of, 166 

 Urine flow, 167 



Vagus nerve in relation to blood 



pressure, 114 

 in relation to heart-beat, 87, 



IOC 



in relation to respiration, 154, 



161 



in relation to stomach move- 

 ments, 129 

 in relation to swallowing 



movements, 128 

 section of, 161 

 Valves, heart, action of, 25 

 Vasomotor centres in cord, 112 

 in medulla, no, in 

 outside of cord, 112 

 mechanism, no 

 nerves, 115 

 reflexes, 112 



Velocity of nerve impulse, 24 

 Venae vorticosae, 178 

 Ventricle, heart, record of contrac- 

 tion, 84 

 Veratrine, action on muscle twitch, 



45 

 Vision, 178 



abnormal, 190 



Vision, color sense, 189 



distant, 188 



light sense, 189 



miscellaneous experiments, 187 



near, 189 



normal, 188 



stereoscopic, 185 

 Visual judgments, 187 

 Vital capacity, 152 

 Vocal bands, movement of, 130 

 Volt, 15 

 Volta, 13 



Volume of contracting muscle, 2:, 

 Vorticella, 7 



Water, distilled, effect on plant life, 



3 



Weber's law, 173 

 Wright stain for blood corpuscles, 64 



Xantho-proteic reaction, 131 



Yeast plant, 4 



growth of, 4 

 influence of light on, 5 

 products of growth, 5 



Zoospores, i, 2 

 Zygospores, 3 



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