Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . of a drop of dilute solu-tion of iodine and iodide of staining fluids may be used forcolouring the different varieties of are picro-carmine, gentian-violet,eosin, acid hsematoxylin solution, safranin,Bismarck-brown and methylene-blue. Itshould be mentioned, however, that thestaining properties of casts vary greatly,and that some which are morphologicallysimilar will behave very differently insolutions of the substances enumeratedhere. Mieder68 recommends the employ-ment of th
Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . of a drop of dilute solu-tion of iodine and iodide of staining fluids may be used forcolouring the different varieties of are picro-carmine, gentian-violet,eosin, acid hsematoxylin solution, safranin,Bismarck-brown and methylene-blue. Itshould be mentioned, however, that thestaining properties of casts vary greatly,and that some which are morphologicallysimilar will behave very differently insolutions of the substances enumeratedhere. Mieder68 recommends the employ-ment of the dye-stuff Soudan III., bywhich the fatty globules in particular arerendered distinctly visible. Personal ex-perience confirms this report. For the investigation of these stainingproperties the sediment should be washed with the normal saline (75per cent. NaCl) solution {Knoll69), and care should be taken that thedyes employed are sufficiently diluted. [For the preservation of urinary casts Harris™ advocates the useof a solution made as follows : potassium acetate 60 grins., chloro-. FiG. in.—as. and b. Cylindroids fromthe urine in congested kidney (eye-piece II., objective 8a, Reichert). 272 THE URINE form 10 cc, distilled water iooo cc. The fluid is placed in tubesspecially made. These are closed by an indiarubber stopper at thebroad upper extremity, and open below at a fine drawn point. Theurinary sediment, obtained under careful precautions of contamination,is dropped in from above, allowed to settle, and finally expressed atthe open point, received in the depression of a glass slide, coveredwith a slip, and cemented. Such preparations are said to be per-manent.] Chemical Constitution of Renal Casts.—Rovicla is still the classicalauthority upon this subject. According to him, the characteristic pro-perty of hyaline casts is their solubility in weak mineral acids. Thisproperty they possess in common with cylindroids. Waxy casts in their behaviour with chemical agents
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Keywords: ., boo, bookcentury1800, bookdecade1890, booksubjectclinicalmedicine
