Scientific Proceedings. 75 



Gastric Analysis. 













Tests for free HCl 







Animal. 



The test meal 



Fluid contents 



were ( 



+ ) positive 



Volume of 



- alkali 



contained 





removed. 



or (- 



) negative 

 with 



used for 



10 



2 c.c. 



Weight. 



Meat. 



Water. 



Time A PP roximate 

 iluxc ' quantity. 



Tropae- Topfer's 

 olin 00. reagent. 



Total 

 acidity. 



Free 

 HCl. 



kgm. 



gm. 



gm. 



hrs. 



c.c. 







c.c. 



c.c. 



A Til 



150 



IOO 



2 



52 



— 



— 



2. 2 



O 









4 



5 2 



+ 



+ 



2. 1 



o-3 



uo. 



I50 



300 





12 







O.8 



0 









2 



13 







2.4 



P 









3f 



25 



+ 



+ 



2. 2 



0.8 



B 20 



70 



200 





Small amount 









0 



An 

 UO. 





300 



1 



2 



9 

 1 



+ 

 + 



+ 





°-3 



J „ 



uo. 





30O 



1 



2 



30 

 47 



+ 



+ 





0 7 



0.7 



UO. 



250 



None 



3 



4* 



2 

 4 



+ 

 + 



+ 

 + 



O.5 



0.3 

 0.2 





150 



IOO 





3 



+ 



+ 



■•5 



0.4 



An 

 UO. 







31 



<3 



? 



+ 



2 -3 



0.4 



150 



300 





3 







1 '3 



0 









2 



5 



+ 



+ 





0 1 











3 



+ 





1.6 





D 12 



IOO 



200 





68 

















2 



29 



+ 



+ 



2.6 



1.2 



do. 





IOO 





38 



? 





3-2 



O.4 









3i 



8 



+ 



+ 



2.0 



0.6 



do. 



250 



None 





14 







31 



O 









3 



3 



? 



+ 



1.8 



0.3 









4f 







? 







E 11 





IOO 





36 







1.6 



O 

















2.0 



O 









4f 



16 



+ 



+ 



2.0 



0.8 



stated that free acid may be present after a meal. As a possible 

 explanation of these discrepancies, the differences between the 

 methods of study used by Muller and by us may be of moment. 

 It is not unlikely that when the semi-solid gastric contents are 

 emptied en masse any free HCl present in the mixture speedily 

 combines with the excess of unchanged proteid ejected, before 

 digestion is stopped outside of the body. In all of our experi- 

 ments, on the other hand, the material, analyzed at once, repre- 

 sented fluid contents as they were present in the stomach. The 

 data furnished should therefore correspond with the composition 

 of the soluble materials ready for propulsion along the digestive 

 tract. At any rate some caution is necessary in the interpretation 

 of the phenomena of gastric digestion recorded by the different 

 investigators. 



