70 OBSERVATIONS ON URTNE AND URINARY DEPOSITS. 
b. Soluble in water and alcohol,, and by their 
depositing again, with their original shape, from 
these liquids, after evaporation, and by the 
aqueous solution being acid to litmus. 
c. Easily melted at a gentle heat, and solidifying 
into a crystalline mass on cooling, and entirely 
vaporized at a high temperature. 
d. By their aqueous solution, after careful neu¬ 
tralization with ammonia, yielding— 
a. A white precipitate with nitrate of silver, 
readily soluble in nitric acid. 
/3. A white precipitate with acetate of lead, 
y. A reddish-brown precipitate with chloride 
of iron. 
5, The urine, in the state in which it was received, w T as 
submitted to microscopic examination, when the un¬ 
dermentioned bodies were detected: 
ct. Epithelial scales. 
/3. Floating corpuscles (mucous corpuscles), already 
referred to. 
y. A few v 7 ell-defined octahedral crystals, which 
were insoluble in acetic acid, but soluble in 
hydrochloric acid; thus indicating that they 
were composed of oxalate of lime. 
6. The amount of hippuric acid in 1000 parts of the 
urine was determined. 
The total amount of solid constituents was likewise 
ascertained. 
In the table below these amounts are given, as well as the 
quantities of the same ingredients found in the urine of a 
healthy horse, at two different periods, by Von Bibra. 
Yon Bibra. Tuson. 
\st Period. 2nd Period. [The viscid urine .) 
Hippuric acid . . 12-60 1-23 2B00 
; . Solid constituents . . 144-91 8746 169-57 
The chief peculiarities of the viscid urine are— 
1. That it contains an excessive amount of solid con¬ 
stituents. 
2. lhat it contains an excessive amount of hippuric acid. 
3. 1 hat it contains urate of soda, a substance generally 
believed to be absent in the urine of the herbivora, although 
Fownes has asserted that he detected a minute quantity^of 
uric acid in the urine of a horse. 
