A guide to the examination of the urine : designed chiefly for the use of clinical clerks and students / By J. Wickham Legg, M.D.

  • John Wickham Legg
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: A guide to the examination of the urine : designed chiefly for the use of clinical clerks and students / By J. Wickham Legg, M.D. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

    91/120 (page 79)
    the clilorides present; the amount of nitrate of nierciny used is then road oil' and noted down ; the nitrate of mercury is then athled by quarters or halves of a (,'.C., the mixture lieing well stirred after every addition, until a dro]) of the mixture gives a yellow eoloin- when broug'ht into contact with solution of carbonate of soda. Tlie most convenient method of ascertaining the first a|)j)earanco of the yellow colour is to j)lace a small glass disc on a piece of black paper, with a few drops of saturated solution of carbonate of soda spread over it; and to let fall as small a drop as possible of the fluid from the beaker into the margin of the soda solution. If no yellow colour be scen_, another half CC. of the mercury solution must be added, and the fluid from the beaker again tested with the soda, and the mercury solution must be added until the least appearance, of yellow occur, when one drop more of the mer- cury solution must be added to the beaker, the fluid well stirred about, and another small drop taken from the mixture and tested with the soda, when, if the process have been rightly performed, an increase in the yellow colour will be perceived. Great care must be taken, during the whole of