276 THE SECRETIONS: 



If we calculate the amount of urea and of uric acid in pro- 

 portion to 100 parts of solid residue, we obtain 43 urea and 

 6g uric acid in the first, but only 31 g urea, and 3*5g uric acid in 

 the second analysis; so that in the first analysis the physio- 

 logical average is exceeded, while in the second it is not reached, 

 at least as far as the urea is concerned. 



In the third analysis the numbers approximate closely to the 

 physiological average, viz. 42g urea and 2-6g uric acid. 



In eighteen cases of rheumatism, in which the renal secretion 

 was examined by Becquerel, it always assumed to a greater or 

 less degree the characters of inflammatory urine during the con- 

 tinuance of the fever : the very deep colour was general, as also 

 the acid reaction, except in one case, in which for a single day 

 an alkaline reaction was observed. The mean specific gravity 

 was 1022*6 : in those cases which threw down a spontaneous 

 sediment it was 1025-2. In twelve out of the eighteen cases, 

 a spontaneous sediment was thrown down during the febrile 

 period : these sediments usually alternated with dark but clear 

 urine, or with urine that was precipitable by nitric acid. 



Albumen was detected in seven of the eighteen cases. During 

 the period of convalescence the urine was anaemic, or returned 

 to its normal state. 



[The following analysis of the urine of a man aged 22 years, 

 suffering from acute rheumatism, was made by Dr. Baumert. 1 

 The urine submitted to analysis was passed on the fourteenth 

 day of the disease. It was of a deep yellowish brown colour 

 but perfectly clear. In the course of twenty-four hours it de- 

 posited a copious sediment of urate of ammonia, but did not 

 become alkaline. 



It presented the normal degree of acidity, and its specific 

 gravity was 1028-3. It contained in 1000 parts : 



Water .... 928-68 



Solid constituents . . . 71-32 



Urea .... 18-65 



Uric acid . . . 0-86 



Extractive matter with a large quantity \ ,,7 fil 



of hydrochlorate of ammonia . / 



Fixed salts . . . 14-20 



1 Archiv fur phys. und patholog. Chemie, vol. 1, p. 45. 



