TRANSACTIONS OF SECTION I. 



761 



The weight of dried organic solids given per day in the two forms of nitro- 

 genous food — viz., the beef extract and the egg-white — was as follows : — 



Comparing this with the previous table, it will be seen that it required 

 approximately four times as much organic nitrogenous food in the form of egg- 

 white to give the same increase of weight as was given by the beef extract. 

 The nitrogenous metabolism is shown in the following table : — 



Table showing Daily Intake and Output of Nitrogen (expressed in grammes) for 



corresponding Periods. 



Food 



Urine 



Faces 



Period 1 (Biscuit) 



Period 2 . 



Period 3 . 



Period 1 . 



Period 2 . 



Period 3 . 



Period 1 . 



Experiment III. 

 5-285 



/5-2850-> 

 10-3143/ 



5-2850 



Experiment IV. 

 4-530 



40591 

 43766 

 4-1836 



r 4-530 \ 



ib){\ 



Period 2 



Period 3 



0-2885/ 



/, ■,( 4-5300 \ 



w 10-3760' 



4-5300 \ 



0-7510/ 



, ./ 4-5300 \ 



. w 10-9390/ 



Experiment V. 



4-530 

 f,sf 4-5300) 

 \ {a n 0-3134 r 



mt 5mx 



,(c){ 



1-3761/ 

 4-5300i 

 0-4388) 

 /, ,f 4-5300i 

 w 10-5637/ 

 ,,,/4-5300\ 

 ( ' 10-9395/ 

 ,,, (4-5300, 

 V c) 11-3153/ 



3-2354 



(a) 3-3221 , j 



(6) 3-6835 I 

 (c) 3-6508 

 («) 3-5399 



(b) 3-7776 



(c) 40295 



11922 

 00746 

 1-2490 



0-8149 

 0-4788 



0-9194 



10120 

 0-7329 



0-6364 



N.B. — In the food column of the above table the bracketed numbers indicate 

 the nitrogen of the biscuit and of the extract respectively. 



It will be seen in Exps. IV. and V. that a deficit of nitrogen exists, if the 

 intake in Period 2 be compared with the output in urine and freces. The quantity 

 thus available for retention in the body amounted in Exp. IV, to 60 per cent, 



