INORGANIC KhESPONSE 125 
responses are undergoing a diminution, or tending 
towards the normal. After continuous stimulation or 
tetanisation (T), it will be seen that the abnormal or 
‘up’ responses are converted into normal or ‘down,’ 
I shall now give a record which will exhibit an 
exactly similar transformation from the abnormal to 
normal response after continuous stimulation. Here 
the normal responses are represented by ‘up’ and the 
abnormal by ‘down’ curves. This record was eiven 
by a tin wire, which had been 
molecularly modified (fig. 76). 
We have at first the abnormal 

Before T After Before 7 After 
Fic. 76 Fie. 77 
Abnormal ‘ down’ response in tin (fig. 76) and in platinum (fig. 77) transformed 
into normal ‘up’ response, after continuous stimulation, T. 
responses ; successive responses are undergoing a 
diminution or tending towards the normal; after con- 
tinuous stimulation (T), the subsequent responses are 
seen to have become normal. Another record, obtained 
with platinum, shows the same phenomenon (fig. 77). 
On placing the three sets of records—nerve, tin, and 
