Philosophical experiments [electronic resource] : 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. Which were read before the Royal-Society, at several of their Meetings, by Stephen Hales, D. D. F. R. S. Rector of Farringdon in Hampshire, and Minister of Teddington, Middlesex.