128 RESPONSE IN THE LIVING AND NON-LIVING 



this increase of response after tetanisation may be due to 

 the hypothetical evolution of C0 2 to which allusion has 

 previously been made. 



But there is an exact correspondence between this 

 phenomenon and that exhibited by metals under 

 similar conditions. I give here two sets of records 

 (figs. 80, 81), one obtained with platinum and the 



Before T After 



FIG. 81. ENHANCED RESPONSE IN TIN AFTER CONTINUOUS STIMULAT ON T 



other with tin, which demonstrate how the response is 

 enhanced after continuous stimulation in a manner 

 exactly similar to that noticed in the case of nerve. 



The explanation which has been suggested with 

 regard to the staircase effect increased molecular 

 mobility due to removal of sluggishness by repeated 

 stimulation would appear to be applicable in this case 



