Lectures on the diseases of the kidney, generally known as "Brights' disease", and dropsy / by S. J. Goodfellow.

  • Goodfellow, S. J. (Stephen Jennings)
Date:
1861
Catalogue details

Licence: Public Domain Mark

Credit: Lectures on the diseases of the kidney, generally known as "Brights' disease", and dropsy / by S. J. Goodfellow. Source: Wellcome Collection.

Provider: This material has been provided by University of Bristol Library. The original may be consulted at University of Bristol Library.

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    on urea gives rise to the formation of carbonic acid and water, and chloride of sodium, together with the evolution of nitro- gen gas. Thus:— Urea. ^ Hypochlorite of Soda. C,ri^N,03-H3(C10Na0) = 2C0,-t-4lI0 3ClNa + N, The nitrogen is evolved, and the carbonic acid is absorbed by some of the hypochlorite of soda in excess; for Dr. Davy found that this salt absorbs carbonic acid very quickly, with- out evolving any other gas ; and he failed in several experi- ments to detect the smallest portion of carbonic acid in the gas produced by acting on urea, though he always noticed the presence of a very minute quantity of oxygen in the ni- trogen gas. Dr. Davy ascertained that several of the substances found in urine during disease, as, for example, sugar, albumen, bile, and excess of urinary colouring-matter, produce scarcely any efiect on the results obtained by this new method of deter- mining the quantity of urea in the urinary secretion. This is an excellent and very easy process for detecting the proportion of urea in the urine, and if performed with ordi- nary care, and pure re-agents be used, is sufficiently accurate for all practical purposes. A very useful plan for measuring the quantity of urine to be submitted to experiment, and one we find very convenient for hospital use, is that suggested by Mr. Heisch. It is to have a separate tube, with a lip to it, graduated to 50 grains and upwards. I mention 50 grains because it is a convenient quantity, and facilitates the sub- sequent calculations. From the results of experiments performed by Mr. Harper with different samples of the hypochlorite of soda solutions, it is of great importance to use in Davys process a pure specimen of the liquor soda chlorinatcB, prepared according to the pro-