ESSAY Ο Ν ELECTRICITY, CONTAINING A Series of EXPERIMENTS Introductory to the Study of that SCIENCE; In which are included Some of the latest DISCOVERIES; INTENDED CHIEFLY With a View of facilitating its APPLICATION, and extending its UTILITY In MEDICAL PURPOSES. B R I S TOL: Printed for J. B. Becket, opposite the Exchange, Bristol; Sold by T. Becker, in the Strand, and G. ROBINSON, in Pater- MDCCLXXIII. 1 Hista beruca Hellu 2.18-44 4155 ADVERTISEMEN T. 1 1 SEVERAL Persons in this City, who have lately fur- ; bave I sate down the more readily to attempt this, from observing that verbal Directions, and even repeating the Experiments before them, were seldom sufficient either to convey a proper Idea of the Nature of Ele&ricity, to those who were Strangers to it, or to prevent their being frequently at a Loss in some Part of the Operation. I had, at first, no farther Intention than merely to draw up such Directions and Observations as immediately occurred to me, for the Use of a few Persons who particularly desired them; but being at the Same Time desirous of promoting a farther Enquiry into the Subjeet, which I am perswaded is of some confiderable Importance to Mankind, I was led by this Motive to colleet several of the most useful Observations from judicious Writers; and, by adding some of the latest Discoveries, to exhibit a short View of the present State of Ele&tricity, which I am now induced to commit to the Candour of the Public, whose Favours already conferred, will be ever gratefully acknowledged, by Their devoted, and obedient Servant, BRISTOL, J. B. Becket. |