100 INJUEY, RECOVERY, AND DEATH 



tion of NaCl the amount of S changes by means of 

 the reactions 



R >5 >T 



and that on transferring to sea water S is rapidly con- 

 verted into A. In order to calculate the rate of recovery 

 we find by trial the most satisfactory values of the ve- 

 locity constants. The values thus found are given in 

 Table V. 



TABLE V 



Velocity Constants 



As an example of the method of calculation we may 

 take the case of tissue exposed for 15 minutes to a solu- 

 tion of 0.52 M NaCl at 17 C. The net resistance in sea 

 water at the start was 960 ohms ; in the course of 15 min- 

 utes in the solution of NaCl it fell to 775 ohms, which is 

 80.69% of the original resistance. The fall of resistance is 

 a little more rapid than in the ' ' standard curve' ' previous- 

 ly obtained. If we assume that this is due to the difference 

 in temperature (these measurements were made at 17 C. 

 while those on which the standard curve is based were 

 obtained at 15 C.) we may introduce a correction by mul- 

 tiplying the abscissa by the factor 24 1.06, which makes it 



24 This agrees closely with the temperature coefficient as determined else- 

 where. See page 37. 



