350 



Dr. Parkes on the Elimination of Nitrogen, [Jan. 31 ^ 



The sulphuric acid was slightly increased in each man, but the increase 

 was not great, and is perhaps within the limits of error. 



Chloride of Sodium. 

 As no chloride of sodium was taken with the non-nitrogenous diet, the 

 amounts excreted represent on the second day the mere waste of the tissues. 





S. 



T. 



Eest. 



Exercise. 



East. 



Exercise. 



First 12 hours of second day (day time) . 

 Last 12 hours of second day (night time) . 



G-914 



2-81 



1-01 



3-280 - 

 •673 

 •119 



4-9 

 1-88 

 •42 



1-866 

 1094 

 •150 





3-82 



0-892 



2-30 



1-244 



As the results agree in both men, it appears that on a diet free from 

 common salt much more chloride of sodium passes with the urine during 

 rest than exercise ; it is to be inferred that in the latter case chloride of 

 sodium passes off by the skin. 



No sugar was detected in the urine by the ordinary tests of liquor 

 potassse and Fehling's copper solution. 



Intestinal Excretion. 

 This was examined on the last day, and was as follows : — 





Total weight, 



Solids. 



Water. 



Nitrogen. 





in grammes. 







s. .. 



100-5 



5-63 



94-87 



•5318 



T. .. 



1207 



11-012 



119-688 



•5739 



If these numbers are compared with those of the corresponding period 

 of rest, it appears that the total intestinal excretion was larger, but this 

 arose in one man from an excess of water ; in the other the solids were 

 increased. In both men the nitrogen was in excess in the period of exer- 

 cise, but the difference was not great, and may probably be disregarded. 



Balance of Ingesta and Egesta, 



On the second day of the non-nitrogenous diet and exercise, the balance 

 of ingesta and egesta was as follows : — 





S. 



T. 



Weight of body at commencement of period, in kilogrammes . 



66-66 

 65-73 



-930 



3639 



2247 

 100-5 



2221-5 



60-1 

 49-87 

 -230 

 3124 

 1667 

 120-7 

 1556-3 











If these numbers are compared with those given in the corresponding 



