286 THE SECRETIONS: 



In order, however, to arrive at a correct conclusion from these 

 figures we must bear in mind that the urine of children natu- 

 rally contains a less proportion of urea and of salts than the 

 urine of adults. 



In osteomalacia the urine is much the same as in rachitis ; 

 it is very acid, and often contains an excessive amount of earthy 

 phosphates. 



[Marchand 1 analysed the urine of a child with osteomalacia 

 three days before its death. The fluid was invariably acid, arid 

 contained in 1000 parts : 



Water . . . 938-2 



Solid constituents . . . 61-8 



Urea 2 7 '3 



Uric acid 



Lactic acid and lactates 

 Phosphates of lime and magnesia 

 Other substances, and loss 



0-9 

 14-2 



5-7 

 13-7 



The earthy phosphates in this instance are five or six times 

 as abundant as in health. In one of the cases recorded by 

 Mr. Solly, 2 there was found in the urine between three and 

 four times the amount of phosphate of lime that occurs in the 

 healthy secretion.] 



Tubercular pulmonary phthisis. 



In tubercular phthisis the urine varies in accordance with 

 the progress of the disease and the degree of fever which is 

 present. I have observed in the majority of cases that after 

 the febrile symptoms have become continuous the urine has 

 assumed the inflammatory type ; that is to say, it is not so 

 deeply coloured as at the height of acute inflammation, but is 

 of a yellowish brown colour, has a tolerably acid reaction, and 

 is above, or at any rate attains the ordinary specific gravity. 



In the early stages of the disease I have not found the urine 

 to differ much either in colour, density, or acidity from the 

 normal secretion. I have only observed that form of urine to 



1 Lehrbuch der physiolog. Chemie, p. 338. 



2 Transactions of the Medico-Chirurg. Society, p. 448, 1844. 



