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Estimate: $ 500 - $ 750
WINTHROP, JOHN. Two Lectures on Comets, Read in the Chapel of Harvard-College, in Cambridge, New-England, In April 1759. 44, xviii pages, including half-title; lacks final blank. 8vo, 198x119 mm, modern 1/4 calf; marginal dampstaining on opening leaves, half-title heavily spotted. Signature of James Scales dated 1760. Boston: Printed and sold by Green & Russell . . . Sold also by D. Henchman, 1759
first edition of lectures for a general audience on the Newtonian theory of comets, delivered following the return of Halley's Comet the month before. Winthrop (1714-79) was the outstanding American astronomer of the colonial period. Brüning 1765; Evans 8522.
