The two most celebrated charts hitherto published of the southermost part of South America, are those of Dr. Halley, in his general chart of the magnetic variation, and of Frezier in his voyage to the South Seas. But besides these, there is a chart of the Streights of Magellan, and of some part of the adjacent coast, by Sir John Narborough above-mentioned, which is doubtless infinitely exacter in that part than Frezier's, and in some respects superior to Halley's, particularly in what relates to the longitudes of the different parts of those streights. The coast from Cape Blanco to Terra del Fuego, and thence to Streights Le Maire, we were in some measure capable of correcting by our own observations, as we ranged that shore generally in sight of land. The position of the land to the northward of the Streights of Magellan, on the west side, is doubtless laid down but very imperfectly; and yet I believe it to be much nearer the truth than what has hitherto been done, as it is drawn from the information of some of the _Wager's_ crew who were shipwrecked on that shore and afterwards coasted it down, and as it agrees pretty nearly with the description of some Spanish manuscripts I have seen. The channel dividing Terra del Fuego is drawn from Frezier; but Sir Francis Drake, who first discovered Cape Horn, and the S.W. part of Terra del Fuego, observed that whole coast to be divided by {95} a great number of inlets, all which he conceived did communicate with the Streights of Magellan. And I doubt not that whenever this country is thoroughly examined this circumstance will be verified, and Terra del Fuego will be found to consist of several islands.