280 



The value found for / in this case is the same as that furnished by the 

 subjects of the other experiments; the duration of regression is a little 

 long, but not improbable. 



. The individual constant C is a measure of the negative acceleration 

 of the regression. In order to determine to what factor it corre- 



a 



i 



u 

 o 



Regression: 



(incomplete 



— I calculation) 



C=0.5 



S 80 



12 3 4 5 

 Time in weeks 



Fig. 8. 



65 



60 



55 



6 



S 



G 



S 

 o 

 o 



o 



^ 50 

 c 



^45 



12 3 4 5 6 

 Time in weeks 



Fig. 9. 



sponds, let us note that the abrupt beginning of the curve indicates 

 that the action of the testicle does not survive castration. Under 

 these conditions, the constant C appears to us to be related exclusively 

 to the properties of the erectile tissue. For this reason we have called 

 it the constant of regression. On its value and on that of the total 

 decline depends the duration of regression. 



Values found. 





