Cholesterol Determination in Duodenal Contents 167 



1. Diagram showing calculated and observed lung volumes in patient No. 1 

 may typify the changes usually found in uncomplicated emphysema of 

 the lungs. Res = residual air. R = reserve air. C = complementary air. 



76 (2036) 



Cholesterol determination in duodenal contents. 



By J. J. HERTZ and MAX KAHN. 



[From the Department of Laboratories, Beth Israel Hospital, 



New York City.] 



The duodenal contents of fasting patients were examined be- 

 fore and after the administration of a saturated solution of 

 magnesium sulfate, according to the method of Lyons. The 

 Duodenal tube was allowed to remain in the duodenum for a 



