London: Robert Hindmarsh, 1787. First edition. 4to. xxiii, (i), 724 pp.; lacking front and rear free endpapers. Illustrated with mezzotint frontispiece. Contemporary speckled brown calf, stamped in gilt, red morocco spine label, head of spine chipped, surface abrasion at top of front board; all edges trimmed; scattered minor spotting to text; book-plate on front paste-down.

Together with:

Plates for the Essays on the Microscope
London: Robert Hindmarsh, 1787. First edition. 4to. Illustrated with 36 impressive engraved plates of microscopic specimens and instruments, on 32 leaves. Bound as above, spine and spine ends chipped; book-plate on front paste-down.

George Adams, Jr. (1750-95) was an English optician and writer, who succeeded his father, George Adams, Sr. (1709-73), as mathematical instrument maker to George III.