264 Prof. V. Harley. Influence of Removal of Large Intestine and 



(a) During the first four days the quantity of urine was rather 

 high, from 100 to 130 c.c. ; the nitrogen varied from 5-460 to 6*950 

 grams. 



The faeces varied in the different days from 22-70 to 50-59 grams. 

 It was indeed in consequence of a great increase of faeces on the 

 twelfth day that it was thought advisable to give the dog another 

 period of four days on the same diet. 



The nitrogen varied, as one would expect, with the quantity of 

 faeces, fluctuating from 0*414 to 1-223 grams, and the fat from 0*458 to 

 T353 grams. 



In this case the quantity of nitrogen, fat, and the daily quantity of 

 faeces were separately analysed, so that the great rise on the twelfth 

 day in both nitrogen and fat found eliminated in the faeces, was not 

 due to an error of drying, but to the quantity absolutely found by 

 analysis on that day. 



(&) During the next period of four days, for some unexplained 

 reason, the quantity of urine passed during the fourteenth and fifteenth 

 days was markedly diminished, being only 90 and 85 c.c., while on the 

 sixteenth and seventeenth it rose to 115 and 143 c.c. In spite of this 

 variance in quantity the averages of the two periods, as will be later 

 seen, are well within reasonable limits. 



The nitrogen in the urine was, as one expected, increased during the 

 sixteenth and seventeenth days, being no less than 6*314 and 6-258 

 gram, as against 5- 159 and 5*530 grams on the fourteenth and fifteenth 

 days, when the quantity of urine was low. 



As far as the quantity of faeces was concerned, on the fourteenth 

 day 33*30 grams were passed, while on the fifteenth day it dropped to 

 only 17*53 grams; on the next days 40*45 to 43'10 grams were 

 passed. 



The quantity of nitrogen in the faeces varied from 0*504 to 0*999 

 gram, and the fat from 0*539 to 1*139, so that the absorption of 

 nitrogen varied from 87*50 to 93*70 per cent., while the absorption 

 of fat varied from 92*51 to 94*53 per cent. 



On the eighteenth day the fat in the diet was increased to 65*19 

 grams, and the analysis commenced on the twenty-first day. 



(c) During the three days on which it was analysed the quantity 

 varied between 50 and 93 c.c., and the quantity of nitrogen from 3*115 

 to 4-270 grams. 



In this stage of the experiment the quantity of faeces varied from 

 29-36 to 42*09 grams on the last day, and the nitrogen in the faeces 

 being for the first day only 0*717, while on the twenty-third day it 

 reached no less than 1*067 grams. 



The fat was naturally very much increased by this large increase in 

 the diet, being 1*792 grams on the twenty-first day, and on the twenty- 

 third day 2*666 grams. The percentage of proteids, as indicated in 



