[Skip to Navigation]
Sign In
December 10, 1887


JAMA. 1887;IX(24):766. doi:10.1001/jama.1887.02400230030013

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.


Dear Sir:  —In No. 2, vol ix, p. 53, of The Journal, you print what is meant to be the formula for Ehrlich's test of typhoid urine, of which I spoke in May last, before the Association of American Physicians, in Washington. In your communication, as also in those of many other journals, there was a serious typographical error, that ought to be corrected in the interest of Professor Ehrlich, but still more so in that of many of your readers. The formula is as follows:

  1. Sodium nitrite, 1 part; aq. destill., 200 parts (is liable to be decomposed after from four to ten days).

  2. Acid sulfanilic, 5 parts; ac. hydrochlor. conc. pur., 50 parts (not 5); aq. destill., 1,000 parts (not 100).

Of 1 take 1.2 parts, of 2 take 50 parts, to form 3. Mix 3 and urine in about equal quantities, and add slowly aq. ammon. towards

First Page Preview View Large
First page PDF preview
First page PDF preview
Add or change institution