But if the river Kovyma be erroneously situated with respect to its longitude, as well as in its latitude, a supposition for which probable grounds are not wanting, the extent of the unexplored coast will become proportionably diminished. The reasons which incline me to believe that the mouth of this river is placed in the Russian charts much too far to the westward, are as follow: First, because the accounts that are given of the navigation of the Frozen Sea from that river, round the N.E. point of Asia to the gulf of Anadir, do not accord with the supposed distance between those places. Secondly, because the distance over land from the Kovyma to the Anadir is represented by the early Russian travellers as a journey easily performed, and of no very extraordinary length. Thirdly, because the coast from the Shelatskoi Noss of Shalauroff[28] seems to trend directly S.E. to the East Cape. If this be so, it will follow, that as we were probably not more than 1 deg. to the southward of Shelatskoi Noss, only sixty miles of the Asiatic coast remain unascertained.[29] Had Captain Cook lived to this period of our voyage, and experienced, in a second attempt, the impracticability of a N.E. or N.W. passage from the Pacific to the Atlantic Ocean, he would doubtless have laid before the public, in one connected view, an account of the obstacles which defeated this, the primary object of our expedition, together with his observations on a subject of such magnitude, and which had engaged the attention and divided the opinions of philosophers and navigators for upward of two hundred years. I am very sensible how unequal I am to the task of supplying this deficiency; but that the expectations of the reader may not be wholly disappointed, I must beg his candid acceptance of the following observations, as well as of those I have already ventured to offer him, relative to the extent of the N.E. coast of Asia. The evidence that has been so fully and judiciously stated in the introduction, amounts to the highest degree of probability that a N.W. passage from the Atlantic into the Pacific Ocean, cannot exist to the southward of 65 deg. of latitude. If then there exist a passage, it must be either through Baffin's Bay, or round by the north of Greenland, in the western hemisphere, or else through the Frozen Ocean, to the northward of Siberia, in the eastern; and on whichever side it lies, the navigator must necessarily pass through Beering's Strait. The impracticability of penetrating into the Atlantic on either side, through the strait, is therefore all that remains to be submitted to the consideration of the public.