The Elements of physiological and pathological chemistry : a handbook for medical students and practitioners ... / by T. Cranstoun Charles.

  • T. Cranstoun Charles
Date:
1884
Catalogue details

Licence: Public Domain Mark

Credit: The Elements of physiological and pathological chemistry : a handbook for medical students and practitioners ... / by T. Cranstoun Charles. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    319. The crystals, when separated, are to be examined microscopi- cally and their characters noted (p. 318). 3. With a watery extract of Liebig's extract of meat make the analysis givea on p. 329, C. Milk.—Repeat the tests given on pp. 394, 395 (l, 2, 3, 4, and e), first examining a drop of milk under a high power of the microscope, then taking the specific gravity, separating the casein and butter, and detecting the sugar; also determining the percentage of solids (p. 396, l), and making an approximative determination of the cream present (p, 397, 2, ij). VII. Urine. 1. The reactions and characteristics of normal urine are to be carefully noted in detail (pp. 418-422). 2. Repeat the tests (l-5, 7, and i)for urea given on pp. 426, 427. 3. Determine the urea in urine quantitatively by Liebig's mercuric nitrate method, as detailed on pp. 434-438, and also by its conver- sion into nitrogen gas with Russell and West's or Simpson's appa- ratus (pp. 445-447). 4. Perform the first four tests given for uric acid on pp. 452, 453. 5. Determine approximately the uric acid in a specimen of urine by adding a little hydrochloric acid to it and laying aside for 24 hours (p. 454). 6. Test for indican by acidifying strongly with hydrochloric acid and then shaking up with a little chloroform (p. 475). 7. Determine the sodic chloride present in urine by Mohr's or Folhard's process (pp. 485-486). 8. Separate the organic and inorganic suljihates present in uiiue by method 2 on p. 489. 9. Determine the sulj)hates of urine volumetricallij by means of standard baric chloride (p. 490). 10. Examine a urinary deposit containing uric acid, urates, and phosphates: warm part of it up with a little of the ui-ine, when the urates will disappear, causing a partial clearing up; now add some acetic acid, and the pho.sphates will dissolve ; filter, and the residual uric acid will dissolve on the addition of caustic potash. Some of tlie deposit sliould be fui-ther examined under the microscope, when tlie yellow, brown, or xeddish-coloured crystals of uric acid will be seen scattered amidst the i-homboidal or triangular ])ri8ms of the phos- phates and the abundant amorphous granules of the urates (p. 492). 11. Separate the phosphates from urine by magnesia mixture (p. 496) and by baryta mixture (p. 437). 12. Determine the amount (f phosjihoric acid by means of stan-
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