INFLUENCE OF BORAX AND 



The relative excretion of nitrogen for the seven periods is 

 shown in the following table : 



L 



Fore Period. 

 62.163 

 49.093 \ 

 1.417 ( 61.734 



1.224 ) 



+0.429 



n. 



First Borax Period. 



60.885 

 48.324 \ 

 2.176 ( 51.686 



1.186 ) 



-0.801 



m. 



First After Period. 



60.995 

 47.430 ) 

 1.845 [ 60.334 



1.069 ) 



+0.661 



Nitrogen of Food . 



Nitrogen of Urine . 



Nitrogen of Faeces . 



Nitrogen of Hair . 

 Nitrogen Balance 



Ratio of Urine and Hair 

 Nitrogen to Food Nitro- 

 gen 96.4 per cent 97.2 per cent. 95.0 per cent. 



Nitrogen of Food . 

 Nitrogen of Urine . 

 Nitrogen of Faeces . 

 Nitrogen of Hair . 



Nitrogen Balance 

 Ratio of Urine and Hair Ni 

 trogen to Food Nitrogen . 92.2 per cent. 93.0 per cent. 



Nitrogen of Food . 

 Nitrogen of Urine . 

 Nitrogen of Faeces . 

 Nitrogen of Hair . 



Nitrogen Balance 

 Ratio of Urine and Hair Ni 



trogen to Food Nitrogen 



104.1 per cent. 97.2 per cent 



In the first borax period of eight days, with a total con- 

 sumption of 32.5 grams of borax, z. e., an average of 4 grams 

 per day, there is practically no change in the rate of proteid 

 metabolism. There is, however, a slight rise in the amount 

 of faecal nitrogen similar to that noticed in the first experi- 

 ment with borax, by which the nitrogen balance is somewhat 

 changed, but there is plainly no effect produced on proteid 

 metabolism. In the second borax period, on the other hand, 

 there is evidence for the first tune of a distinct and unques- 



