193 



3. vvitli electrification. 



Antagonistic to uranium, provided that the dosage of both factors 

 be cautiously measured ^) are : 



1. potassium, 



2. radiation, 



3. electrification. 



For vagus-influences in ail these cases see an article in Arcii. 

 need, de physiol. '). Probably they do not play a part in what has 

 been described in this paper. 



1) H. ZwAARDEMAKEK, K. Akad. Amst. Proc. March 1917. 



2) H Zwaardemaker and J. VV. Lely Arch, néerl. de physiol. Part I, p. 

 745, 1917. 



