1907.] Rate of Assumption of Chloroform by the Blood. 565 



but are relatively so, averaging, in the experiments quoted, about 50 per cent. 

 After the corneal reflexes have vanished, even though the percentage of 

 chloroform administered be kept absolutely constant, there is no criterion 

 other than analysis by which we can judge of the progress of anaesthesia in 

 these animals. 



In our experiments, death always occurred by failure of the respiration 

 succeeded by asphyxia. Under the conditions of our experiments under- 

 taken on a very large number of cats, we have never noticed death by heart 

 failure preceding cessation of respiration. 



We take this opportunity of expressing our thanks to the Government 

 Grant Committee of the Eoyal Society for assistance in carrying out this 

 work ; and also our appreciation of the valuable assistance of Mr. G. W. Ellis, 

 who has helped in a large number of the laborious analyses. 



vol. lxxix. — b. 2 s 



