7. (Possibly most important of all) a letter of an officer of the Russian Navy. This appeared first in Russian, presumably {210} printed at St. Petersburg in 1752 or 1753; the original Russian I have not seen. It was translated, however, into French and printed at Berlin (not dated) in 1753, under the following title: "Lettre d'un officier de la Marine Russienne. A un Seigneur de la Cour concernant la carte des nouvelles découvertes au nord de la mer du Sud et le mémoire qui y sert d'explication. Publiée par M. de l'Isle, à Paris en 1752. Traduit de l'Original Russe, à Berlin, chez Haude et Sperer, Libraires de la Cour et de l'Academie Royale (1753)." This edition forms part of my library, and is the only copy which I know of in the United States. It is not to be found in the Library of Congress, the Astor Library, the Boston Athenæum, or the Boston Public Library. It is not even in the Royal Library at St. Petersburg, but, as might be anticipated, is in the British Museum. I find it nowhere catalogued in any bibliography of arctic or subarctic works. The French edition was inserted, with some changes, it is believed, in the eighteenth volume of the Nouvelle Bibliotheque Germanique. 8. "A letter from a Russian Sea-Officer to a Person of Distinction at the Court of St. Petersburg, containing Remarks on Mr. de l'Isle's Chart and Memoir relative to the New Discoveries North and East from Kamtschatka, together with some Observations on that Letter by Arthur Dobbs, Governor of East Carolina, to which is added Mr. de l'Isle's Explanatory Memoir on his Chart." 8vo, 85 pp., London, 1754. The "Arthur Dobbs" who published this edition, and who possibly was the translator thereof, is well known as the energetic promoter of the discovery of the "northwest passage," and was personally interested in discovery voyages to Hudson bay. The explanatory memoir of de l'Isle's chart is a translation of the memoir previously mentioned as belonging to the map of 1752, which memoir I have not been able to consult in the original French. It may be added that Dobbs' reproduction of the "Letter from a Russian naval officer" is not accurate, the translation in places being so carelessly or indifferently made that the text cannot be relied on for critical purposes. This English translation is to be found neither in the Library of Congress, the Boston Public Library, the Boston Athenæum, nor in the Library of the American Geographic Society. It is, however, in the Astor Library, and a second copy at one time belonged to the library of Mr. J. C. Brevoort. {211} 9. "Mappe Monde. Carte Universelle de la Terre. Par J. B. Nolin, Geographe." 1755, 20¼ x 27 inches. On this appear the legends: "I. de Beering; Detroit de Nord; Terres découvertes par les Ruses [sic] en 1741; Terres veues en 1741." It is quite possible that this is the first map of the world on which Bering island was charted.