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Some essays include: A description of an Orrery, executed on a new plan; Calculation of the transit of Venus over the sun as it is to happen June 3, 1769 from Greenwich; Calculation of the fame for the city of Phila.; An account of the Transit of Venus over the sun, June 3, 1769, as observed at Norriton and in the state-house Square, Phila., in PA, near Cape Henlopen, on Delaware, at Providence, New England, and at the Lizzard Point; Observations of the transit of Venus and eclipse of the sun, June 3, 1769, made at the Royal Observatory, Greenwich; A essay on the cultivation of the vine, and the making and preserving of wine, suited to the different climates in North-America; Observations concerning the Fly-Weevil, that destroys the wheat; Observations on the native silk worms, of North-America; Account of an oil made from the seeds of the Sun-Flower; An easy method of preserving subjects in spirits; A catalogue of such foreign plants as are worthy of being encouraged in the American Colonies, for the purpose of medicine, agriculture, and commerce; Directions for putting up seeds and plants, so as to preserve them in a state of vegetation, for being transported to distant countries; An account of the eruption of Mt. Vesuvius, in 1767; An Account of a machine for pumping vessels at sea without the labor of men; An abstract of sundry papers and proposals for improving the inland navigation of PA and MD, by opening a communication between the tide-waters of Delaware and Chesapeake Bay. Illus.
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