104 



A STUDY OF THE INFLUENCE 



tion gives the same values as the original method. Thus in 

 one experiment : 



Our experience with Tb'pfer's method (or Einhorn's modi- 

 fication) leads us to agree with P. Hari * that in the absence 

 of free HCL, t. e., when no reaction is obtained with the di- 

 methylamidoazobenzol reagent, the quantitative determinations 

 of HC1 by this method cease to be accurate, and under such 

 conditions it cannot be employed. The occurrence of such 

 conditions, however, is not frequent in the dog; we have 

 observed the absence of free HC1 (during digestion) in one 

 animal under circumstances resembling those of acute gastric 

 catarrh, f The food dog biscuit was largely undigested 

 many hours after the meal, the acidity was high (0.55-0.594 

 per cent expressed as HC1), and the gastric contents possessed 

 an odor strongly suggesting fatty acids. Lactic acid was 

 found present (Uffelmann's test). 



In view of the increased volume of fluid found in the 

 stomach when alcohol is introduced into that organ after liga- 

 tion of the pylorus, it was of interest to learn what results 

 follow under normal conditions of the pylorus. For this pur- 

 pose 20 to 25 per cent alcohol, slightly warmed, was intro- 

 duced through the gastric cannula, and at the end of 30 

 minutes the gastric contents were discharged into a graduated 



* Hari, P. : Arch. f. Verdauungskrankh., ii, pp. 182, 332 ; Centralbl. f. 

 Physiologic, 1896, x, p. 731. 



t Cf . y. Jaksch : Klinische Diagnostik innerer Krankheiten, 4te Auflage, 

 p. 200. 



