51 First complete edition of “the most important scientific book of 18th-century America” and “America’s first great scientific contribution” (PMM 199), with seven copper engraved plates (two folding). An important edition, edited and revised by Franklin himself, and with material and footnotes appearing here for the first time. This first complete edition is the fourth edition of the original work; the earlier editions, each issued in three parts as separately published pamphlets usually bound together, were carelessly published. Franklin edited this new one-volume edition himself, significantly revising the text, adding for the first time a number of his own philosophical letters and papers, introducing footnotes, correcting errors, and adding an index (Cohen, Benjamin Franklin’s Experiments). “Franklin’s most important scientific publication,” Experiments and Observations contains detailed accounts of the founding father’s crucial kite and key experiment, his work with Leiden jars, lightning rods and charged clouds (Norman 830). “The most dramatic result of Franklin’s researches was the proof that lightning is really an electrical phenomenon. Others had made such a suggestion before him— even Newton himself— but it was he who provided the experimental proof” (PMM). “The lightning experiments caused Franklin’s name to become known throughout Europe to the public at large and not merely to men of science. Joseph Priestley, in his History of Electricity, characterized the experimental discovery that the lightning discharge is an electrical phenomenon as ‘the greatest, perhaps, since the time of Isaac Newton… Franklin’s achievement… marked the coming of age of electrical science and the full acceptance of the new field of specialization” (DSB). Minor wormholing to front pastedown only, minor expert paper restoration at edges of first few leaves. Expected agewear to extremities of contemporary calf boards. An extremely good copy. 58FRANKLIN, Benjamin. Experiments and Observations on Electricity, Made at Philadelphia in America… To which are added, Letters and Papers on Philosophical Subjects. London, 1769. Quarto, contemporary full brown calf, rebacked with original red morocco spine label laid down. $45,000 “America’s First Great Scientific Contribution”: First Complete Edition Of Franklin’s Illustrated Experiments And Observations On Electricity, 1769
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