CA LD E R NAVIGA T I O N. THE Stihfcribtrs to tb* Third Subfcript ion for the faid Navigation,
... ordered this Powder to be fo preferved for the Ufe of all his Majesty's Ships of War ; and a large Quantity is alfo made up in the fame Manner for Merchants ar.d Captains of Trading Ships, as well as for thofe who are any way concerned in Voyages or the Sea ...