File:Kidney diseases, urinary deposits, and calculous disorders - their nature and treatment (1870) (14778965822).jpg

Identifier: kidneydiseasesur00beal (find matches)
Title: Kidney diseases, urinary deposits, and calculous disorders : their nature and treatment
Year: 1870 (1870s)
Authors: Beale, Lionel S. (Lionel Smith), 1828-1906
Subjects: Kidneys Urinary organs Urine Kidney Diseases Urinalysis Urinary Calculi
Publisher: Philadelphia : Lindsay and Blakiston
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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recipitated. Oxalurate of ammonia was prepared by dissolving parabanic acid inammonia. Upon heating the solution to the boiling point oxalurate ofammonia was formed, and crystals were obtained upon evaporation. Murexid. Carbonate of ammonia was added to a warm solution otalloxan and alloxantin. The murexid separated in its characteristicdark red crystals as the solution cooled. Thionuric acid. A solution of thionurate of ammonia in hot water,was precipitated by acetate of lead. The precipitate was suspended inwater and decomposed by sulphuretted hydrogen. The sulphuret wasseparated by filtration, and the clear solution yielded crystals onevaporation. Thionurate of ammonia. A cold strong solution of alloxan wasmixed with a solution of sulphurous acid in water until the smell of thelatter ceased to disappear after agitation. The fluid was then super-saturated with carbonate of ammonia, and kept boiling for nearly halfan-hour. Upon cooling, the salt crystallized in considerable quantity,
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COLOURING MATTERS OF URINE. 147 but in so small a proportion as to show their atomic weight must bevery high. 4. Both substances have a tendency to take up water, especiallywhen their aqueous solutions are heated or mixed with strong acids andevaporated. 5. The extractive matter insoluble in ether takes up a certain pro-portion of oxygen, and is converted into a product which does notdiffer in its appearance or its most obvious physical properties from theoriginal substance. 6. There exists no extractive matter insoluble in alcohol, the sub-stance hitherto so-called consisting in most cases of compounds of oneof the true extractive matters with various bases. The Colouring Matters of Urine have formed the subject of numerouselaborate investigations by most distinguished chemists, and althoughmany very important discoveries have been made, we have got much tolearn concerning these bodies. A full account of the urinary colouringmatters will be found in Dr. Schuncks memoir, to which freq

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