The supplement to a small treatise called Salt-water sweetned shewing the great advantages both by sea and land, of sea-water made fresh. Together with the Honourable Mr. Boyle's letter, and the approbation of the Colledge of Physicians, of the wholsomness of this water. And also the conditions on which the patentees and others concern'd, do intend to contract with such as shall please to deal with them for the use of his invention.

The Benefits and Advantages of Sea-Water made Fresh.

MUch Stowage will be saved, so that a Ship of 50 or 60 Tun, and proportio∣nably of greater Bulk, may take in several Tuns of Goods more than formerly they used to car∣ry; which will considerably advance the Trade of all Merchants, and be of vast profit to the Masters or Owners of Ships.

The Charge of Casks is very considerable, especially when bound with Iron, as all Sea-Casks must be; And by means of this Engine, three fourths of that charge will be saved.

The tear and wear of Boats often going from Ship-board, and frequent loss of the Boats and men in Stormy Weather, and the Op∣••••••••nity of the Sea-mens being Drunk or

shoar; by which many fatal accidents do hap∣pen, (by means of having this Water-Engine) will be prevented.

Ships in long Voyages have been forc'd to run many Leagues from their intended course, which much retards their Voyage, and makes them lose fair Winds, and maintain more Sea-men at charges of Diet and Wages than they have occasion for; which inconveniencies may be prevented by having Water within themselves.

Ships are often forc'd to leave their Anchors and Cables behind them, by being forc'd in∣to dangerous Shoars upon account of taking in Fresh Water.

In the African, East and West India Voyages, great quantities of Fresh Water are necessary, which the Sea-men are forc'd to put above Deck for want of room, which is great hin∣drance to a Ships Sailing, and much endangers and weakens a Ship.

In case of Calms, which often happen in the narrow Seas, but especially near the Line, this Instrument will be of vast advantage, by af∣fording fresh and wholsome Water, instead of that which is unwholsome and offensive.

Essex, Kent, and all other the Sea-Coasts, in any part of the World, that want wholesome Water, may be easily and cheaply supplied by this means; as also Venus 〈…〉〈…〉

Windam, and all other Towns or Places that lye near the Sea, and either want good, or have Brackish Water.

In time of War, whole Navies may be re∣lieved by this Engine, and Opportunity gi∣ven of making the greatest Discoveries imagi∣nable.

It is further to be considered, that hitherto the richest and ablest bodied Sea-men have been averse from undertaking long Voyages, by reason of endangering their Healths, and Lives, by making use of putrified Water, which inconvenience is not now to be feared, their be∣ing such useful hopes of Fresh Water by the use of this Engine; and possibly a smaller num∣ber of men may serve the use of Ships than do at present, by which much Charges will be saved to the Masters and Owners of Ships; and Merchants may Trade upon easier Terms.

In Portsmouth, Rochester, the Fenns of Lin∣colnshire, and any other places near the Sea, where Waters are Brackish, and consequently unwholsome, this Engine, &c. may be very useful, and where there is room enough to place it, very great quantities of Water may be had for the use of whole Families, and the Ingredients when used in great quantities may be afforded at a cheaper Rate.