A guide to the examination of the urine, intended chiefly for clinical clerks and students / by J. Wickham Legg.

  • Legg, J. Wickham (John Wickham), 1843-1921.
Date:
1869
Catalogue details

Licence: Public Domain Mark

Credit: A guide to the examination of the urine, intended chiefly for clinical clerks and students / by J. Wickham Legg. Source: Wellcome Collection.

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

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    during digestion and increased by fasting or perspiration. A very acid, higli coloui-ed urine is associated with the uric acid diathesis/' Alkalinity of the urine is always due to decomposition of the urea into carbonate of ammonia, excepting those cases in which the alkaline salts have been taken. It is most frequently present in diseases of the spinal cord and chronic affections of the bladder and urinary organs. When the alkahnity is due to ammonia, the brown colour of the tumeric disappears when the paper is exposed for some time to the air or gently heated: but the change from yellow to brown is permanent if the alkalinity be owing to either potash or soda. EXAMINATION FOE ALBUMEN. This is the first and most important step in the chemical examination of the urine : the presence or absence of albu- men must always be determined before proceeding to test for any other substance, and the search must never be omitted in the examination of any urine. The best way of testing for albumen, is to fill a test tube about two thii'ds full of the mine to be examined and to heat the upper layer of the fluid over the flame of a lamp, the lower end of the tube being held between the thumb and forefinger of the observer. By employing this method two strata of fluid are obtained for comparison.