340 



l)r. A. D. Waller and Miss S. C. M. Sowton. [June 12, 



2. Abolition of the variation ; same nerve soaked for 1 hour in a 

 putrid solution of serum-albumin. 



3. Recovery ; same nerve left for 12 hours in normal saline. 



4. Abolition ; same nerve left for 2 hours in putrid serum-albumin. 



5. Recovery ; same nerve for 4J hours in putrid serum-albumin. 



FIG. 10. 



FIG. 11. 



voiC 

 OO3 



OOP 



001 



I 2.3 



5 6 7 6 9 10 II IZ 13 * 15 16 /7 IQ 19 2O 21 22. 25 & 25 2>hour3. 



Remarks on the foregoing Experiments (I to XVIII}. 



EXP. I. Betdine Hydrochloride 2 per cent. This nerve exhibits 

 abolition by betaine and recovery by saline twice repeated. 



The companion nerve exhibited a similar result twice repeated. 

 The plotted curve (fig. 12) gives the magnitude of the negative 

 variation. 



FIG. 12. 



hours 30 



