URINE. 163 



During During During 



a mixed diet. an animal diet. u vegetable diet. 



Free lactic acid . 1-462 2-167 1-189 grammes 



Combined lactic acid .1-162 ? 1-371 



Hence there is not any very appreciable effect produced on 

 the amount of the lactic acid. The phosphates and sulphates 

 were much the same as during a mixed diet. 



The three following perfect analyses of the urine were insti- 

 tuted : 



Aug. 20th . Aug. 21st. Aug. 23d. 

 (the 9th day of the experiment.) 



Water . . . 929-10 941-91 934-92 



Solid residue . . 70-90 58-09 65-08 



Urea . . 23-31 22-42 25-69 



Uric acid . . 1-17 1-01 0-89 



Lactic acid . . 1-55 1-01 1'35 



Lactates . . 2-39 1-89 2-06 



Extractive matter soluble in water 3-80 3-07 3-71 



alcohol 17-84 13-78 15-77 



Mucus . . -12 -10 -10 



Chlorides of sodium and ammonium 3-80 3-07 3-71 



Sulphates . . 7-16 7'14 7-23 



Phosphate of soda . 3-54 3-68 3-74 



Earthy phosphates 1-22 1-09 I'll 



The following table shows how much the extractive matters 

 are influenced by diet : 



Extractive matters 



in 100 parts Extractive matters 



of solid residue. discharged daily. 



During a mixed diet . . 16-637 10-489 grammes 



an animal diet . . 5-818 5-196 



a vegetable diet . . 29-482 16-499 



Lehmann concluded his experiments with some observations 

 on the influence of a strictly non -nitrogenous diet on the urine. 

 These are the least satisfactory of the series, because the general 

 health becomes so rapidly injured as to affect the results. His 

 daily food consisted of about 400 grammes of starch, sugar, or 

 gum, and 125 grammes of almond oil. The urine passed after 

 this diet had been continued for twenty-four hours had a brownish 

 red colour, a slightly acid reaction, and became alkaline in 

 twenty-four to thirty-six hours. The following analyses were 

 made in the month of June, on the 2d and 3d day from the 

 commencement of this course of diet : 



