36 



Scientific Proceedings (95). 



c f acid output of a frog's sciatic nerve be measured by taking the 

 time required for the solution to change tint from pH 7.8 to pH 7.4, 

 this rate will be seen to fall after the first or second consecutive 

 readings. If now the nerve be taken out and crushed with a glass 

 rod, the subsequent measurement will show a large increase in 



V, 



0 0 SCT^TCO KE6«E. 



... I. ' -■ J ! 1 1 A 



0 1 2 3 4. 5 6 HOURS 



Fig. i. 



