206 General A. W. Greely — Bering's First Voyage. 



It may appear somewhat presumptuous for the j^resent writer 

 to further dwell on some points of subordinate importance, even 

 with the view of supplementing the investigations of Professor 

 Dall ; but he is encouraged to the effort by the admirable spirit 

 in which that gentleman works, which is so clearly indicated in 

 his own words : " I am well aware this paper cannot be regarded 

 as a finality, but as a contribution to the geographical history 

 of North America it will not be without its value." This spirit 

 encourages every one to contribute his mite to elucidate the 

 history of this interesting and ill-known period. 



The supplementar}^ remarks now presented mainly relate to 

 tw^o points : first, the cartographic reproduction of Bering's dis- 

 coveries ; second, the alleged observations of lunar eclipses in 

 Kamshatka by Bering and his lieutenants in 1728-'29. 



In attempting to add to Professor Dall's essay or to elucidate 

 some points, it is but natural to felicitate one's self that chance 

 has put in one's way rare data in the shajDe of text and map. 

 Nevertheless, much difficulty has been experienced in efforts to 

 consult publications and charts bearing on this subject, as sup- 

 plementary to the data in the writer's OAvn library. Fortunately, 

 among his personal books and maps are the following, which 

 have escaped the critical, if not casual, observation of Professor 

 Dall : 



1. The originalHague* edition of Pere du Halde, which Dall 

 was unable to consult ; it is entitled " Description Geographique, 

 Historique, Chronologique, Politique, et Physique de I'Empire 

 et de la Tartaric Chinoise," etc. 4 vols., 4° : a la Haye, 1736. 



2. De I'Isle's scattered essays, entitled " Memoires pour servir 

 a I'histoire et au progres de I'Astronomie, de la Geographic, et 

 de la Physique, etc., etc. : a St. Petersbourg, de I'imprimeris de 

 I'Academie des Sciences. MDCCXXXVIII [1738]." 



3. "Atlas Russien : contenant une Carte Generale et dix-neuf 

 Cartes particulieres de tout I'Empire de Russie et des Pays limi- 

 trophes construites conformement aux regies de la Geographic 

 et aux dernieres Observations. Par I'Academie Imperiale des 

 Sciences de St. Petersbourg. St. Petersbourg, 1745." 



This was the first atlas published in Russia in the map depart- 

 ment established by order of Peter the Great in the Academy of 

 Sciences of St. Petersburg. It includes a general map of the 

 Russian Empire and nineteen maps of provinces. 



*The first edition, in French, was published at Paris, -i vols., folio, 1735. 



