214 



Scientific Proceedings (128) 



rate rose. Furthermore, throughout all their experiments the 

 basal metabolic rate varied with the general condition of the pa- 

 tient. When the rates were lowest the glucose utilization was 

 best and acidosis was either controlled or decreased. When the 

 basal metabolic rate rose sugar tolerance was diminished and 

 acidosis increased. 



Abstracts of Communications, Peking Branch 



First meeting. 



Peking, China, December 4, 1922 

 104 (2064) 



Some experimental observations on the retina of the gecko. 



By S. R. DETWILER. 



[From the Anatomical Laboratory, Peking Union Medical College, 



Peking, China.] 



The association of visual purple or rhodopsin with the visual 

 function of the rods in dim or twilight vision as maintained in 

 the duplicity theory of von Kries (Nagel, 1 Helmholtz, 2 Parsons, 3 

 and Hartridge 4 ) is generally regarded as well substantiated. 



As to the genesis of this pigment, numerous ideas have been 

 advanced, although it is generally held that it is a product of the 

 epithelial pigment cell (Garten 5 and Kolmer 6 ). 



In the present work on the gecko retina, which is cone-free, 



1 Nagel, W., Handbuch der Physiologie des Menchen, Bd. 3, 1905. 



2 Helmholtz, H. von, Handbuch der physiologischen Optik, Bd. 2, 1911. 

 • J > Parsons, J. H., An Introduction to the Study of Colour Vision, 1915. 



4 Hartridge, II., " Vision,' ' pp. 486-588, Starling's Human Physiology, 

 1920. 



5 Garten, S., Graefe-Saemisch Handbuch der gesammten Augenheilkunde, 

 1907, Bd. 3, Kap. 12, 130 pp. 



6 Kolmer, W., Pfliiger's Archiv., 1909, cxxix, 35. 



