278 THE SECRETIONS: 



chronic rheumatism in which he administered benzoic acid. 

 During the first twenty-four hours the symptoms are always 

 aggravated, but they usually subside on the second day. 



The Exanthemata. 



In all the acute exanthemata the urine very frequently pre- 

 sents, as Schonlein remarks, a peculiar character, which is due, in 

 many cases, to an admixture of bile-pigment : it has a dark- 

 brown colour, and resembles badly-fermented beer in appear- 

 ance. At the commencement of the crisis the urine becomes 

 clearer, and forms a pulverulent sediment consisting of uric 

 acid "(and perhaps urate of ammonia). 



In the fever which accompanies erysipelas, and is usually of 

 an erethisinic or synochal character, the urine is frequently 

 loaded ^with bile-pigment, and is of a reddish-brown or red 

 colour. At the urinary crisis, fawn-coloured precipitates are 

 deposited, and the urine becomes clear. (Schonlein.) 



Becquerel has examined the urine in several cases of erysipelas. 



When the erysipelas is accompanied by fever, as is most com- 

 monly the case, the urine assumes the inflammatory type. 

 Becquerel made two quantitative analyses of the urine of a man 

 aged 39 years, who had erysipelas of the face, and a good deal 

 of fever (pulse 112). 



The urine of the first analysis was of a deep yellowish-red 

 colour, and clear; its specific gravity was 1021*0. 



The urine of the second analysis was so deeply coloured as 

 to appear almost black; it threw down a reddish sediment of 

 uric acid, and had a specific gravity of 1023-1. 



The first analysis was made on the fourth, and the second 

 on the sixth day from the commencement of the disease. 



These analyses gave : 



Anal. 1. Anal. 2. 



Quantity of urine passed in 24 hours, in ounces . 27'0 30-8 



Water ..... 965-5 961-9 



Solid constituents .... 34'5 38'1 



Urea . . . 12-5 12-7 



Uric acid . . . .1-2 1-3 



Fixed salts .... 8-2 



Extractive matter . . . 15-9 



In a woman aged 45 years, with erysipelas of the face, 



