288 SCIENCE PROGRESS. 



recently obtained by Cybulski and Zanietowski, 1 contrac- 

 tion following a quite different curve of ratio. We can 

 never therefore expect for reactions obtained via the 

 cortical centres that the quantities of muscular work re- 

 sulting out of them (the very quantities most accessible to 

 measurement) will bear a ratio to stimulus expressible by 

 the well-known logarithmic curve. 



C. S. Sherrington. 



1 Pfltiger's Archiv, vol. lvi., p. 45. 



