INDEX 



231 



Vaso-motor nerves to kidney, 200 

 Velocity of nervous impulse, 94 



— of the blood-flow, 188 

 Ventricle contraction, 107 



effect of heat, 116 



of tetanisation, 110 



— — — of two stimuli, 109 

 Veratrine, influence of, on muscle, 



49 



Vibrating reed, GO 



Vision, direct and indirect, 225 



Wave of contraction in muscle, 73 



— pulse, studied on schema, 162 

 Work performed during a twitch, 34, 50 



— in simple twitch, rate of, 35 



— variation in amount with different 

 loads, 51 



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