1865-67.] RETURN TO CAMBRIDGE. 153 



A last excursion in the vicinity of Rio to the Organ 

 Mountains during June terminated Agassiz's journey in 

 Brazil. He embarked the second of July for the United 

 States, and arrived in Cambridge in August, 1866. 



The main results of the Brazil expedition were, first, 

 the great collections of all sorts, which were stored in 

 the Agassiz Museum, awaiting final arrangement; 

 second, two series of lectures at the Lowell Institute, 

 in Boston, and at the Cooper Institute in New York, on 

 the scientific generalizations growing out of the expedi- 

 tion ; third, a volume of five hundred pages, entitled, 

 " A Journey in Brazil, by Professor and Mrs. Louis 

 Agassiz," Boston, 1868, with a French translation by 

 F. Vogeli, 1 Paris, 1869; and fourth, a few articles 

 published in reviews, and in the " Bulletin Societe 

 Geologique de France " - these last on the geology and 

 with the collaboration of Coutinho and the present 

 writer. 2 



The "Journey in Brazil" was a disappointment to 

 the public in general, and more especially to the natu- 

 ralists and personal friends of Agassiz. " The Naturalist 

 on the River Amazons," by H. W. Bates, a work of 

 genius, had somewhat spoiled the Amazons as a field of 

 research, and had led people to expect more important 



1 The French edition is more complete and more valuable than the 

 English, containing three times as many illustrations and maps and also 

 some additional notes. 



2 " Lettre de M. Agassiz a M. Marcou sur la geologic de la vallee de 

 1'Amazone, avec des remarques de M. Jules Marcou" ("Bull. Soc. Geol. 

 France," Vol. XXIV., p. 12, December, 1866). "Sur la geologic de 

 1'Amazone," par Agassiz et Coutinho, with notes by Marcou (" Bull. Soc. 

 Geol. France," Vol. XXV., p. 685, May, 1868). 



