. Urinary deposits : their diagnosis, pathology, and therapeutical indications. a drop of a solution ofurate of soda is placed on a plate of glass with a dropof strong acetic acid, the following results were the moment of contact, a deposit of excessivelyminute globules (a) appears, often presenting the mole-cular movements described by Mr. R Brown. Theglobules at last cohere into oval masses (b), which ulti-mately become transparent (c), and subsequently as-sume the form of hexagonaltables (d), or vertical prisms. If a drop of a concentratedsolution of urate of soda beheated to boilin
. Urinary deposits : their diagnosis, pathology, and therapeutical indications. a drop of a solution ofurate of soda is placed on a plate of glass with a dropof strong acetic acid, the following results were the moment of contact, a deposit of excessivelyminute globules (a) appears, often presenting the mole-cular movements described by Mr. R Brown. Theglobules at last cohere into oval masses (b), which ulti-mately become transparent (c), and subsequently as-sume the form of hexagonaltables (d), or vertical prisms. If a drop of a concentratedsolution of urate of soda beheated to boiling, and an ex-cess of acetic acid added, it-will remain clear at first, butsoon after will begin to de-posit crystals of uric acid inrectangular columns and ta-bles (e), more rarely in pseudo-morphous forms, madeup of an aggregation of parellelopipedons. If the solu-tion be not heated so strongly before the acetic acid isadded, rhombic prisms are formed (f), and when thesolution is still cooler, even these become modified infigure (g). If a drop of the mixture of solution of. Fig. 19. MICROSCOPIC CHARACTERS. 131 urate of soda and acetic acid be placed whilst boilinghot on a plate of glass, and be suddenly cooled bytouching it with a glass rod, rhombic prisms arerapidly deposited, and grow up to a certain point,when on a sudden they become opake, and split intominute rectangular parellelopipedons. 127. Coarse, and deep orange or red, sand is gene-rally composed of cohering crystals, forming, indeed,minute calculi. Two varieties of these are frequentlymet with, one formed (Fig. 20) of cohering, thick,rhomboidal prisms, and the other of aggregatedlozenges in spinous masses. The latter are most fre-quently found where a marked tendency to the forma-tion of calculi exists (Fig. 21). It is not unfrequentto find these masses crystallised on a hair, just as sugar- & i .?#£* Fig. 20.
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Keywords: ., bookcentury1800, bookdecade1850, booksubjecturinary, bookyear1853
