260 



Dr. V. Haiiey. On the Breahing-up 



great delay in the quantity of fat leaving the stomach during the six 

 hours, as compared with what was observed in the normal dogs. 



In the small intestine the total fat present was only 0*822 gram. 

 This is sornewmat less than what we know has already passed through 

 the pylorus, for it was seen that 0*872 gram of fat had left the 

 stomach during the six hours. The neutral fat in the intestine was 

 only 0*312 gram, so that the quantity had diminished to only 37*95 

 per cent., a little more than half of that present in the stomach. 



The quantity of free fat acids was 0*452 gram, the percentage 

 having increased to 54*99, almost double what was present in the 

 stomach. The fat acids present as soaps were 0'058 gram, bringing 

 the percentage composition of the soap to 7'06. 



The large intestine contained 0*251 gram of fat ; of this, a very 

 great part must be attributed to the intestinal excretion, and was 

 certainly not residue of the fat given. The neutral fat is only 0*082 

 gram, that is to say, 32*68 per cent, of the total fat only remains as 

 neutral fat when it has reached as far as the large intestine. 



The free fat acids amounted to 0*113 gram, so that the percentage 

 proportion was 45*01, this being less than that present in the small 

 intestine. 



The soap present was 0*056 gram, the total quantity being almost 

 the same as that present in the small intestine, but as the quantity of 

 total fat is very much smaller, the relative amount of fat acids com- 

 bined as soaps reaches in the large bowel a very much higher point 

 than in any other part of the alimentary canal, being 22*31. 



In the next two dogs in which the pancreas was removed the period 

 of digestion allowed was seven hours in each case. 



Table YI. — Weight, 5'40 kilos. Total Extirpation of the Pancreas. 

 Milk given forty-eight hours after Removal of the Gland. 

 Killed by Chloroform after seven hours' digestion. 





Total ether 

 extract. 



Neutral fat. 



Free fat 

 acids. 



Fat acids as 

 soap. 





Total. 



p.c. 



Total. 



p. c. 



Total. 



p. c. 



Total. 



p. c. 





7-191 



100 



6-877 



95-63 







•309 



4-30 



0-005 



0-07 



Found in — 























6*554 



100 



2-708 



41-32 



3 



828 



58 -41 



0-018 



0-27 



Small intestine. 



1-077 



100 



-470 



43-64 







•561 



52-09 



0*046 



4-27 



Large intestine. 



-644 



100 



0-175 



27T7 







•359 



55 *75 



0-110 



17-08 



In the above Table VI, of 7T91 grams of fat given no less than 

 6*554 still remained in the stomach, so that only 0*637 gram had 



