The size of the map is 7 x 12¾ inches. It extends on the east to the meridian of 126° east from Tobolsk which enables the "Isle of St. Demetrius" (our present Big Diomede) to appear in its proper place. The editions previously reported have all stopped at the 124th meridian, thus cutting off the island, whose name sometimes appeared and sometimes did not. It will be observed that Dr. Campbell in this paper was the means of introducing the erroneous and obnoxious Germanized spelling of Bering's name into English literature. This is a pretty good indication that he had no autographic documents from Bering himself, and that his manuscripts were obtained from German sources, or at least had been transcribed into the German language. In his thorough search of the literature of the subject and lengthy discussion of the results, Dr. Campbell undoubtedly gathered the fullest account of the first expedition which had up to that date been printed. In order to enliven his history of the proceedings, the good Doctor occasionally rises to flights of fancy, and the theories he held were long since proved erroneous. There are several other English translations of Du Halde's China, of which the following is the most important: "A description of the empire of China and Chinese-Tartary, together with the kingdoms of Korea, and Tibet: containing the geography and history (natural as well as civil) of those countries. From the French of P. J. B. Du Halde, Jesuit. Illustrated with general and particular maps, and adorned with a great number of cuts. With notes geographical, historical and critical, and other improvements, particularly in the maps, by the Translator." London, Edward Cave, 1741. 2 vols. folio, maps and ills. This edition does not show the name of the translator, but he was evidently a man of no small attainments as a geographer and cartographer, and introduced numerous improvements and corrections into the charts of D'Anville, which accompanied the original edition of Du Halde. A copy of this was presented to the library of Harvard College by the province of New Hampshire in 1765-6, for an opportunity of examining which I am indebted to the courtesy of Mr. Justin Winsor, the Librarian. The text of this edition, compared with that of 1736, is as much as possible abridged, yet contains nothing not in the original, but the map exhibits certain additions to be noted. This map is entitled,