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ADAMS, GEORGE, the Younger. An Essay on Electricity . . . Fourth Edition. 6 folding engraved plates. xi, [1], 573, [1], 14, [2] pages * Astronomical and Geographical Essays . . . Third Edition. Engraved allegorical frontispiece and 16 folding engraved plates. xx, 564, 14, 2 pages; lacks pages ix-xii * Geometrical and Graphical Essays . . . Second Edition. 34 folding engraved plates. [4], vi, [6], 518; [2], 91, [1], 14, [2] pages. 2 volumes. Together, 4 volumes. 8vo, 210x128 mm, contemporary uniform mottled calf gilt with leather lettering pieces, top of spines slightly chipped; varying toning and foxing, marginal dampstaining at beginning and end of An Essay on Electricity and in first volume of Geometrical . . . Essays. Early 19th-century owner's inscription on front free endpapers. London: R. Hindmarsh for the Author, 1792; 1795; J. Dillon and Co. for W. and S. Jones, 1797
