1884. ] Physiology. 209 
ofthe stomach was nearly or completely excluded. A dog was 
submitted to an operation in which the whole of the stomach was 
removed except a small part of the wall near the cardiac entrance 
ofthe organ. The free edges of the alimentary tube were sewed 
together, the animal completely recovered from the operation and 
was killed six years after for the purpose of post mortem observa- 
tion. During that period the dog remained in perfect health, 
gained in weight and readily digested the most various food mat- 
ters. The fæces were quite normal in character. Ogata studied 
the subject farther in various ways. Iu dogs possessing a gastric 
fistula food matters of different kinds were introduced, by means 
of a tube passed through the opening in the stomach wall, directly 
into the duodenum, the gastric juice being prevented from pass- 
ing the pylorus by means of an appropriate plug. When mixed 
tissues, such as pieces of liver, lung or intestinal mucous mem- 
brane were thus introduced into the duodenum, it was found 
that the cellular or albumen-containing elements were most readily 
dissolved, while the collaginous and reticular tissues were com- 
paratively unaffected. Elastic tissue was also dissolved, but more 
slowly than the first-named. With vegetable substances it was 
found that the cell contents were dissolved while the cell-walls, 
ugh apparently offering no great resistance to the diffusion of 
the intestinal juices through them, remained undigested. A num- 
er of dogs were fed in the way described with meat or eggs and 
killed in a painless manner at different times after giving the 
fal. It was found that the food in each case had provoked 
active secretion of the alkaline fluids of the pancreas and intestine 
and that a large amount of material was digested and absorbed 
bP aba hours after feeding. The conclusion arrived at is that 
Minous bodies and cooked connective tissue are digested as 
paren done and speedily by juices poured into the intestiné alone 
these = secretions of the stomach and intestine together. In 
. a, ee there seemed to bea very limited flow of bile. 
7 
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i 
j 
es eer 
ested more ra 
than whe 
awakened € sleeper, that is, to call forth some decisive sign of 
Of the au consciousness. As a sensory stimulus they made use 
8 given h tory sensation produced by dropping a lead ball from 
accorda eight. The strength of the stimulus was reckoned, in 
Teasin.- ota tope recent investigations of Vierordt, * = 
ve * Girectly as the heigh t as the 0.59 power of te 
igs y t, but as l 59 p 
