Craven-Street, Dec. 21, 1757.
IN compliance with your request, I send you the following account of what I can at present recollect relating to the effects of electricity in paralytic cases, which have fallen under my observation.
Some years since, when the news-papers made mention of great cures performed in Italy and Germany, by means of electricity, a number of paralytics, were brought to me from different parts of Pensylvania, and the neighboring provinces, to be electrised, which I did for them at their request. My method was, to place the patient first in a chair, on an electric stool, and draw a number of large strong sparks from all parts of the affected limb or side. Then I fully charged two six gallon glass jars, each of which had about three square feet of surface coated; and I sent the united shock of these through the affected limb or limbs, repeating the stroke commonly three times each day. The first thing observed, was an immediate greater sensible warmth in the lame limbs that had received the stroke, than in the others; and the next morning the patients usually
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Publication information: Book title: The Ingenious Dr. Franklin:Selected Scientific Letters of Benjamin Franklin. Contributors: Nathan G. Goodman - Editor, Benjamin Franklin - Author. Publisher: University of Pennsylvania Press. Place of publication: Philadelphia. Publication year: 1931. Page number: 26.