URINE. 



161 



the phosphate of lime is generated, while only a portion of the 

 earthy phosphates of the food is conveyed into the blood. Lime 

 occurs in the blood in considerable quantity, being conveyed 

 there by the water taken as drink, and combining readily with 

 the free phosphoric acid. Moreover, a further confirmation of 

 this view is afforded by the fact of the increased excretion of 

 phosphate of soda. During a mixed diet, the daily average is 

 3' 673 grammes, while, during a purely animal diet, it amounts 

 to about 5-217 grammes. 



Lehmann next proceeded to investigate the effects of a 

 strictly vegetable diet. The urine was examined daily from the 

 12th to the 23d of August; it was of a yellowish-brown rather 

 than a yellow colour ; it had a faint odour, and a decidedly acid 

 reaction, which did not disappear for six or eight days. The 

 morning urine was of a dark brown colour, and rapidly depo- 

 sited a mucous sediment, after which there was a gradual sepa- 

 ration of bright red crystals of uric acid. The following table 

 contains the daily amount of urine and of its solid constituents, 

 and the specific gravity : 



Absolute weight 



of urine in 24 hours, 



in grammes. 



980 



765 

 1059 



978 

 1212 



817 



916 



720 



796 



931 



811 



892 



Spec. grav. 



1028-9 

 1036-1 

 1020-1 

 1025-7 

 1016-4 

 1032-3 

 1026-8 

 1034-2 

 1029-8 

 1023-8 

 1028-6 

 1027-9 



Solid residue 



in 

 1000 parts. 



67-60 

 82-76 

 55-85 

 60-13 

 50-01 

 75-68 

 63-09 

 80-76 

 70-90 

 58-09 

 67-01 

 65-08 



Daily amount 



of solid residue, 



in grammes. 



66-25 

 63-31 

 59-14 

 58-81 

 60-61 

 61-83 

 57-79 

 58-15 

 56-44 

 54-08 

 56-35 

 58-05 



By taking the mean of these numbers we are enabled to 

 construct the following table : 



Amount of urine in 24 hours 



Specific gravity 



Solid residue in 1000 parts of 



urine 



Solid constituents in 24 hours 

 II. 



On 

 mixed diet. 



1057-8 gr. 

 1022-0 



65-82 

 67-82 gr. 



On On 



animal food, vegetable food. 



1202-5 gr. 909 gr. 



1027-1 1027-5 



75-48 

 87-44 gr. 



66-41 

 59-23 gr. 



11 



