HALES (Stephen). Philosophical Experiments: containing useful, and necessary instructions for such as undertake long voyages at sea. Shewing how sea-water may be made fresh and wholsome: and how fresh-water may be preserv'd sweet. How Biscuit, Corn, &c. may be secured from the Weevel, Meggots, and other Insects. And Flesh preserv'd in hot Climates, by Salting Animals whole. To which is added, An Account of several Experiments and Observations on Chalybeate or Steel-Waters: With some Attempts to convey them to distant Places, preserving their Virtue to a greater Degree than has hitherto been done. Likewise a Proposal for cleansing away Mud, &c. out of Rivers, Harbours, and Reservoirs...1739

London: Printed for W. Innys and R. Maney, First edition, 8vo (195 x 125 mm), [4], xxx, [2, errata leaf], 163, [1], [6, index], [2, publishers adverts]pp., with half-title, 1 engraved plate, neatly rebound in quarter calf, marbled boards, red morocco spine label lettered in gilt. Stephen Hales (1677-1761) dedicated this work to the Commissioners of the Admiralty with the observation that those in charge of the 'most numerous and Powerful Fleet in the World' had particular use for a work intended chiefly for seafaring persons. Wellcome III, p. 194.