i6 



through his private explorations; he was elected to the 

 several Societies of Science and Literature in Rio de 

 Janeiro, and invited to lecture. His thorough acquaint- 

 ance with the language of the country enabled him to 

 communicate freely with the people, and he soon found 

 himself encircled with friends, who gladly gave their 

 influence in advancing his laudable plans. 



In his proposition for the Survey of Brazil, he advised 

 the organization of a large party, to consist of three sep- 

 arate divisions, each complete in itself, and equipped for 

 field research. Had his ideas been fully carried out he 

 would have soon explored an immense tract of country, 

 but the money requisite for so extensive an undertaking 

 could not at that time be appropriated, and Hartt was 

 forced to begin on a much smaller scale than he had 

 wished. On the ist of May, 1875, " A Commissao Geo- 

 logica do Imperio do Brazil " was organized, with Prot. 

 Hartt as chief, and the following assistants: Elias F. de 

 P. Jordao, Engineer; C). A. Derby and Richard Rathbun, 

 Assistant Geologists; and F. Jose de Freitas, praticante. 

 Siir, Marc Ferrez, photographer of the Imperial Navy, 

 was appointed to the same position on the Geological 

 Survey, where he was retained for a year and a halt. Mr. 

 John Branner was soon added to the corps. Siir. Jordiio 

 retired from his position in the spring of 1876, and was 

 succeeded by Mr. Luther Wagoner, who resigned in July, 

 1877. Mr. Frank Carpenter then became the topographer 

 of the Survey, and continued in this capacity to the time 

 of the death of Prof. Hartt. Mr. Derby and myself 

 arrived in Brazil only at the close of 1875. No other 

 changes than the above occurred in the personnel of the 

 Commission, and the difficulties constantly attending the 

 exploration of such a large country, with so small a corps, 

 can be readily imagined.* 



* It is most fitting to mention here the name of Major O. C. James, of Rio 

 de Janeiro, the oldest and most valued friend of Prof. Hartt in Brazil. From 

 the first day Prof. Hartt arrived in that country to the time of his death, he 

 was constantly imdebted to Major James for assistance and advice, and to 

 him, in large part, was due the successful organization of the Geological 

 Commission, for which he acted in the capacity of Secretary, his services 

 being rendered gratuitously. His long experience in Brazil made him an 

 invaluable auxiliary to the Commission, and he labored for it indefatigably. 



