356 Dr. Parkes — Further Experiments on the [Mar. 2, 



Urinary water, in cub. centims. 





8 A.M. 



8 P.M. 







to 



to 



Total. 





8 P.M. 



8 A.M. 







676-5 



43° 



1106-5 





660 



270 



93° 





780 



210 



990 





415 



87 



502 





7i5 



140 



850 



Urea, in grammes. 





8 A.M. 



8 P.M. 







to 



to 



Total. 





8 P.M. 



8 A.M. 







16-768 



8-5I4 



25-282 





7-986 



4-293 



12-079 





3-042 



3-087 



6-123 





3-652 



2-540 



6-192 





4-290 



3-066 



7-356 



Nitrogen. 





Nitrogen by soda-lime. 



Total in 24 hours. 



8 A.M. 



to 



8 P.M. 



8 P.M. 



to 



8 A.M. 



Nitrogen 



by 



soda-lime. 



Nitrogen 

 calculated 

 from urea. 





8-287 



4-304 



12-591 



11798 





3-782 



2-381 



6*163 



5728 





1-692 



1-396 



3-088 



2-859 





1-764 



•9196 



2-684 



2-889 





2*052 



1*333 



3*383 



3*433 



The effects of exercise and rest are complicated with the gradually de- 

 creasing elimination dependent on the supply of nitrogen being cut off, 

 consequently nothing can be concluded from the lessening of nitrogen on 

 the 2nd day (exercise). On comparing the 3rd and 4th days (rest and 

 exercise), the nitrogen by soda-lime shows a decrease on the exercise day ; 

 but as the ureal nitrogen is almost precisely the same on the two days, it 

 does not seem possible to affirm a decrease. The most positive result is 

 the increase of nitrogen (as shown by both methods) on the 5th day (rest 

 after work). There was a decided excess, amounting to '699 grammes or 

 very nearly 19 per cent. Such an increase occurring on the 5th day after 

 the supply of nitrogen was cut off, seems inexplicable unless on the suppo- 

 sition that it was owing to the previous muscular exertion. 



I felt, however, that this experiment might be better conducted. The 

 exercise was commenced too soon, and before the nitrogen had reached its 



