Gastric Hormon in the Salivary Glands. 117 



Specimen B. Total acidity = 0.90 c.c. N/2oNaOH. 



Free H CI =0.20 c.c. " 



Specimen C. Total acidity = 1.26 c.c. " 



Free HC1 =0.20 c.c. " 



Digestive power (Metz tubes) ; twelve hours at 39 0 C. 



A (with addition of acid 



B (with " 



C (with " 



A (without " 



B (without " 



C (without " 



.good digestion, 

 .good 

 .good 



no 

 no 



C = material found in stomach after fasting. 

 Conclusion ; B and C are identical. 



April 10, 1908. Dog fasted for past thirty-six hours. 3.00 

 P. M. Catheterized ; 8.6 c.c. of fluid removed containing much 

 dark mucus {specimen A). 3.01. Deep chloroform anesthesia. 

 Right external jugular vein exposed. 3.15. Catheterized; 3.4 c.c. 

 of fluid removed (specimen B). 3.20 ; 5 c.c. of submaxillary extract 

 injected intravenously. (The glandular extract was prepared as 

 before.) 3.25. Catheterized; 8.8 c.c. of fluid removed {specimen 

 C). 3.26. Showed and allowed to smell raw meat. 3.30. Cath- 

 eterized; 5.3 c.c. of fluid removed {specimen D). 



The results of chemical analysis, under the conditions as before, 

 were as follozvs : 



April 10, 1908. Four samples of gastric juice from dog with 

 fistula. The titrations were done with N/20 NaOH, with phenol- 

 thalein for total acidity, with dimethylamidoazobenzol for free 

 HC1. 



Specimen A. I c.c, total acidity = 2.15 c.c. N/20 NaOH. 



1 c.c, free HQ =0.1 c.c. " 

 Specimen B. I c.c, total acidity = 1.4 c.c. " 



I c.c, free HC1 =0.1 c.c. " 

 Specimen C. I c.c, total acidity = 0.7 c.c. " 

 No free HC1 



Specimen D. 1 c.c, total acidity = 1. 1 c.c. " 



1 c.c, free HC1 =0.45 c.c. " 



Digestive power (Metz tubes) ; twelve hours at 39 0 C. 



Without addition of acid. With addition of HC1 up to 2 per cent. 

 A — doubtful. A — digestion. 



B — " B — very doubtful. 



C — no digestion. C — digestion. 



D — digestion. D — good digestion. 



