PHYSIOLOGICAL EFFECTS OF LACK OF O\Y<;EN 



also lead to a standstill in the part icular life-phenome- 

 under observation. We tind that, both possibilities are, 

 indeed, eneountered. Further investigation may possibly 

 be able to show that the xn<l<l<'ii cessation of life-phenomena 

 through lack of oxygen may generally be attributable to 

 structural changes. Were this the case, it might point the 

 \vay, perhaps, to a clearer understanding of the action of 

 many poisons. 



