[Illustration: _Fig. 1._ _Fig. 2._ _Folwell. Sc._ ] AN EPITOME OF ELECTRICITY & GALVANISM. BY TWO GENTLEMEN OF PHILADELPHIA. Causa latet; vis est notissima.——Ovid’s Met. B. IV. l. 287. PHILADELPHIA: PRINTED BY JANE AITKEN, No. 71, NORTH THIRD STREET. 1809. DISTRICT OF PENNSYLVANIA, TO WIT: [Sidenote: SEAL.] _BE IT REMEMBERED_, That on the fourteenth day of December, in the thirty-fourth year of the Independence of the United States of America, A. D. 1809. Jane Aitken, of the said District, hath deposited in this Office, the Title of a Book, the Right whereof she claims as Proprietor, in the words following, _to wit_:— “An Epitome of Electricity and Galvanism. By two gentlemen of Philadelphia. Causa latet; vis est notissima.—Ovid’s Met. B. IV. l. 287.” In conformity to the Act of the Congress of the United States, intituled, “An Act for the encouragement of Learning, by securing the Copies of Maps, Charts, and Books, to the Authors and Proprietors of such Copies, during the times therein mentioned.” And also to the Act, entitled “An Act, supplementary to an Act, entitled, “An Act for the encouragement of Learning, by securing the Copies of Maps, Charts, and Books, to the Authors and Proprietors of such Copies, during the times therein mentioned,” and extending the benefits thereof to the Arts of designing, engraving, and etching historical and other prints.” D. CALDWELL, _Clerk of the District of Pennsylvania_. RECOMMENDATIONS. _Having perused this Epitome, it appears to me to comprise, in a concise and perspicuous manner, the principal discoveries that have been made in Electricity and Galvanism, illustrated with a variety of amusing experiments; and I have no doubt that it will prove useful and entertaining to those who wish for information on these subjects._ _JOHN M‘DOWELL_, Professor of Natural Philosophy, and Provost of the University of Pennsylvania. Philad. Dec. 11, 1809. * * * * * _Having read, at the request of the authors, a work under the title of_ “An Epitome of Electricity and Galvanism,” _I am of opinion that it is well calculated for the instruction of youth; and also that it may prove a useful manual to gentlemen who wish to acquire, without extensive reading, a general knowledge of the subjects discussed_.