The Earl of Sandwich, and the other Commissioners for the Discovery of Longitude at Sea, etc. who were present at a late meeting at this place, having expressed to you a desire that the very learned and ingenious Discourse upon some late Improvements of the Means for preserving the Health of Mariners, which was delivered by you at the Anniversary Meeting of the Royal Society, on the 30th of November last might, with Captain Cook's Paper therein referred to, be printed, and annexed to the Account of the Astronomical and Philosophical Observations made in the course of the said Captain Cook's late voyages which account is preparing for the press, under their direction; and it having been since thought more proper that the said Discourse and Paper should be annexed to the Second Volume of the Account of that Voyage, which is shortly to be published, by order of the Board of Admiralty, I have, therefore, the direction of the Earl of Sandwich, First Commissioner of that Board, as well as of the Board of Longitude, to acquaint you therewith, and to desire you will please to permit your said Discourse, with the Paper therein referred to, to be printed, and annexed to the Second Volume of the Account of the said Voyage accordingly. I am, with great Regard and Esteem, SIR, Your most obedient humble Servant, ADMIRALTY, March 15, 1777. JOHN IBBETSON. A DISCOURSE UPON SOME LATE IMPROVEMENTS OF THE MEANS FOR PRESERVING THE HEALTH OF MARINERS. DELIVERED AT THE Anniversary Meeting of the ROYAL SOCIETY, November 30, 1776. By Sir JOHN PRINGLE, Baronet, PRESIDENT, CORRECTED BY THE AUTHOR. GENTLEMEN,