Experiments and observations on electricity, made at Philadelphia in America, by Benjamin Franklin, L.L.D. and F.R.S. To which are added, letters and ... with copper plates. [Fourth edition]. - Softcover

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British Library

T101040

With a half-title and an index. An "Advertisement concerning this fourth edition" forms part of the preliminaries, with an errata on the verso. Pp.111-2, 416-7. 465-472 are duplicated in pagination, but text and register are continuous. Vertical chain

London : printed for David Henry; and sold by Francis Newbery, 1769. [2],iv,[2],496[i.e.508],[16]p.,plates : ill. ; 4°