Origin of de l' Isle's Map. 211 



9. "' Mappe Monde. Carte Universelle de la Terre. Par J. B. 

 Nolin, Geographe." 1755, 20! x 27 inches. On this appear the 

 legends : " I. de Beering ; Detroit de Nord ; Terras decouvertes 

 13ar les Ruses [sic] en 1741 ; Torres veues en 1741." 



It is quite possible that this is the first map of the world on 

 which Bering island was charted. 



10. John Christopher Adelung's very interesting history of sea 

 voyages for the discovery of a " northeast passage," which was 

 published in quarto form under the following title : " Geschichte 

 der Schifi'ahrten und Versuche welche zur Entdeckung des 

 Nordostlichen Wages nach Japan und China von varschiedenen 

 Nationen untarnomnian wordan. Zum Behufe der Erdbeschrei- 

 bung und Naturgeschichta dieser Gegandan antworfan von Johann 

 Christoph Adelung, Herzoglich Sachsichen Rath Halle bey Jo- 

 hann Justinus Gebauer, 1768." 



11. Notice des Ouvrages da M. d'Anville. 8°, Paris, An. X 

 [1802], 120 pp. By Barbie du Bocage. 



In addition to these and other works from my own collection, 

 I have consulted at the library of the United States Naval Observ- 

 atory, in this city, " Histoire de I'Academie Royale cles Sciences, 

 Annee 1750," Paris, 1754, and the same, " Annee 1754," Paris, 

 1757, which contain articles on de I'Isle's manuscript maps of 

 1731 and 1752, the latter being substantially identical with the 

 published map of 1752^ 



From Ball's review wa learn that Lauridsen is responsible for 

 the statement that the discoveries of Bering in his first voyage 

 were shown on a chart made at Moscow in 1731, but no authority 

 is given as to the cartographer. Later I shall adduce evidence 

 to confirm Dall's opinion that the Moscow map was merely a 

 copy, such as were distributed to parsonages of importance or to 

 those connected with the expedition. It is further susceptible 

 of, as I think, tolerably satisfactory proof that the outlines of 

 Kamshatka, with fairly correct meridians of longitude, were 

 made public in a chart by de I'Isle not in 1731, but the year 

 following, 1732, and it is likely that the lost map of that j^ear 

 was substantially reproduced in the chart of 1752, which I have 

 the pleasure of now presenting for your examination. 



De I'Isle presented this map to the Academy of Sciences of 

 Paris on April 8, 1750. The circumstances connected with the 



