36 



Scientific Proceedings (31). 



All of our results were gained from dogs that lived for three 

 to six months and then had to be killed in most cases because we 

 had no room or facilities for keeping them during the summer vaca- 

 tion — excepting the series of the summer of 1907 when I kept 

 four dogs at our country home. 



What Dr. Loevenhart aimed at 



Line of normal gastric secretion 



a 



Secretion expected to rise above normal 



no extirpation 

 of salivary glands 



What Dr. Hemmeter attempted to 

 ascertain. 



Line representing nor- 

 mal gastr. secret. 



gastric \ juice 



a : 

 o ^ 



decidedly reduced qualitatively 

 and quantitatively 



gradually re- 

 stored to 

 nearly normal 



Dog No. 2 of Dr. Loevenhart was also abnormal. This is evi- 

 dent from the feeble proteolysis as indicated by Mett tubes (in Dr. 

 Loevenhart's article they are called " Metz " tubes) and the low 

 acidity, and Dr. Loevenhart gravely states that the fluid gained by 

 catheterization, 8.6 c.c, specimen A, contained much dark imicits 

 (blood ? and mucus). Mucus in a fasting dog's stomach is one 

 of the most reliable indications of gastritis. Dog No. 2 had a dis- 

 eased stomach also. 



We made our salivary extract from maceration of all four pairs 

 of canine salivary glands, even the orbital — and it is all important 

 that this extract should be made only from salivary glands that 

 have been functionally active immediately before their excision 



