Physiological and medical researches into the causes, symptoms, and treatment of gravel / by F. Magendie ... ; translated by a member of the Royal College of Surgeons in London.

Magendie, François, 1783-1855.

Date:: 1818

Credit: Physiological and medical researches into the causes, symptoms, and treatment of gravel / by F. Magendie ... ; translated by a member of the Royal College of Surgeons in London. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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$are but very rarely formed of cystic oxide, and for this reason we might neglect to notice it on this occasion, yet as this animal matter is but little known among physicians, I shall briefly describe its principal characters. Calculi formed of this substance, are semi-transparent, and of a yellowish colour; they have a lustre similar to that of bodies of a density powerfully refractive. When cystic oxide is distilled in a retort, it furnishes carbonate of ammo- nia, of a fetid odour; there also passes a heavy fetid oil, similar to that obtained from animal matter, but in a much less considerable proportion than that which results from the distillation of uric acid. These properties of cystic oxide show us, that, like uric acid, it is principally composed of azote 5 it is then very pro- bable, that it is produced by causes analogous to those which determine the formation of uric acid. This substance is but very slightly soluble in water, and not at all in alcohol and the acetic, tar-$