Having now passed Beering's Strait, and taken our final leave of the N.E. coast of Asia, it may not be improper, on this occasion, to state the grounds on which we have ventured to adopt two general conclusions respecting its extent, in opposition to the opinions of Mr Muller. The first, that the promontory named East Cape, is actually the easternmost point of that quarter of the globe; or, in other words, that no part of the continent extends in longitude beyond 190° 22' E.; the second, that the latitude of the north-easternmost extremity falls to the southward of 70° N. With respect to the former, if such land exist, it must necessarily be to the N. of latitude 69°, where the discoveries made in the present voyage terminate; and, therefore, the probable direction of the coast, beyond this point, is the question I shall endeavour, in the first place, to investigate.
As the Russian is the only nation that has hitherto navigated these seas, all our information respecting the situation of the coast to the northward of Cape North, must necessarily be derived from the charts and journals of the persons who have been employed at various times in ascertaining the limits of that empire; and these are for the most part so imperfect, so confused, and contradictory, that it is not easy to form any distinct idea of their pretended, much less to collect the amount of their real discoveries. It is on this account, that the extent and form of the peninsula, inhabited by the Tschutski, still remains a point on which the Russian geographers are much divided. Mr Muller, in his map, published in the year 1754, supposes this country to extend toward the N.E., to the 75° of latitude, and in longitude 190° E. of Greenwich, and to terminate in a round cape, which he calls Tschukotskoi Noss. To the southward of this cape he conceives the coast to form a bay to the westward, bounded in latitude 67° 18', by Serdze Kamen, the northernmost point seen by Beering in his expedition in the year 1728. The map published by the academy of St Petersburgh, in the year 1776, gives the whole peninsula entirely a new form, placing its north-easternmost extremity in the latitude of 73°, longitude 178° 30'. The easternmost point in latitude 65° 30', longitude 189° 30'. All the other maps we saw, both printed and in manuscript, vary between these two, apparently more according to the fancy of the compiler, than on any grounds of more accurate information. The only point in which there is a general coincidence, without any considerable variation, is in the position of the east cape in latitude 66°. The form of the coast, both to the S. and N. of this cape, in the map of the academy, is exceedingly erroneous, and may be totally disregarded. In that of Mr Muller, the coast to the northward bears a considerable resemblance to our survey, as far as the latter extends, except that it does not trend sufficiently to the westward, receding only about 5° of longitude, between the latitude of 66° and 69°; whereas in reality it recedes near ten. Between the latitude of 69° and 74°, he makes the coast bend round to the N. and N.E., and to form a considerable promontory. On what authority now remains to be examined.