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To the Editor:
—My contention in regard to the action of hexamethylenamin in the urine has been either misunderstood or misquoted in an abstract (The Journal, March 27, 1915, p. 1118) of an article by Dr. H. F. Høst. Inasmuch as Dr. Høst's work is essentially in agreement with my own conclusions, this misstatement should be corrected. To quote the review, Høst "states in conclusion that his research has demonstrated that F. Hinman was wrong when he said (The Journal, Nov. 1, 1913, p. 1601) that neutral or feebly alkaline urines are unable to split off formaldehyd. He adds that Hinman's mistake was that he did not heed the temperature in testing for formaldehyd, as this is a reversible reaction and should be carried out at 37 C." In my study I found formaldehyd in some amount in every urine tested, irrespective of alkalinity or acidity, but only 36 per
Hinman F. Hexamethylenamin as Disinfectant for the Urinary Apparatus. JAMA. 1915;LXIV(18):1519. doi:10.1001/jama.1915.02570440059023
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