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delphia, is particularly deserving of notice. He has demonstrated that the poisonous properties of this plant are due to the presence of an acid and not to any volatile alkaloid, as has been supposed. He proposes for this the name of toxicodendric acid. There is also a valuable paper on the economical use of alcohol in the preparation of extracts, by Dr. Squibb. These sketches were first published in the Philadelphia Medical and Surgical Reporter. They are brief, highly eulogistic, and impressdoi:10.1056/nejm186608020750105 fatcat:r3x7mk6rfzbytfn753bosgcahu