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Buffalo, N. Y., Feb. 21, 1898.
To the Editor:
—In your issue of February 19, you quote from a report of Boas and Dorn, in the Deutsche Med. Woch., regarding the use of capsules of bismuth for location of lesions in the alimentary tract. As this is an important matter, in regard to which priority is, naturally, a matter of interest, will you kindly put on record the following data.Feb. 9, 1897, I used gelatin capsules containing reduced iron for this general purpose, having had the matter in mind for some months. This experiment was a failure, on account of lack of power of X-ray apparatus, so far as the stomach was concerned, though the capsules could be plainly seen in the mouth. July 13, 1897, this method succeeded with three or four patients, using both iron and bismuth in the capsules. These experiments are more fully reported in
Benedict AL. Bismuth Capsules—A New Application for the X-Ray.. JAMA. 1898;XXX(10):565-566. doi:10.1001/jama.1898.02440620053014