I had now made the circuit of the Southern Ocean in a high latitude, and traversed it in such a manner as to leave not the least room for the possibility of there being a continent, unless near the pole, and out of the reach of navigation. By twice visiting the tropical sea, I had not only settled the situation of some old discoveries, but made there many new ones, and left, I conceive, very little more to be done even in that part. Thus I flatter myself, that the intention of the voyage has, in every respect, been fully answered; the southern hemisphere sufficiently explored; and a final end put to the searching after a southern continent, which has, at times, ingrossed the attention of some of the maritime powers for near two centuries past, and been a favourite theory amongst the geographers of all ages. That there may be a continent, or large tract of land, near the pole, I will not deny; on the contrary, I am of opinion there is; and it is probable that we have seen a part of it. The excessive cold, the many islands and vast floats of ice, all tend to prove that there must be land to the south; and for my persuasion that this southern land must lie, or extend, farthest to the north, opposite to the Southern Atlantic and Indian Oceans, I have already assigned some reasons; to which I may add the greater degree of cold experienced by us in these seas, than in the Southern Pacific Ocean under the same parallels of latitude. In this last ocean, the mercury in the thermometer seldom fell so low as the freezing point, till we were in 60° and upwards; whereas in the others it fell as low in the latitude of 54°. This was certainly owing to there being a greater quantity of ice, and to its extending farther to the north, in these two seas than in the South Pacific; and if ice be first formed at, or near land, of which I have no doubt, it will follow that the land also extends farther north.