CHAPTER XX. 



1865-1867. 



JOURNEY TO BRAZIL His COMPANIONS ON THE JOURNEY BURKHARDT'S 

 ILLNESS AND DEATH AGASSIZ'S RECEPTION BY THE EMPEROR - 

 MAJOR COUTINHO EXPLORATIONS ON THE AMAZONS RIVER Two 

 STEAMERS PLACED AT THE DISPOSITION OF AGASSIZ TRACES OF GLA- 

 CIAL PHENOMENA IN THE PROVINCE OF CEARA RESULTS OK THE 

 JOURNEY THE COPLEY MEDAL AGASSIZ'S NATURALIZATION AS AN 

 AMERICAN CITIZEN THE NATIONAL ACADEMY OF SCIENCE DR. 

 BROWN-SliQUARD ANOTHER SERIES OF PUPILS AND ASSISTANTS 

 DEATH OF MRS. ROSE AGASSIZ, NEE MAYOR. 



EVER since 1828, when a student at Munich, he 

 undertook the publication of the " Brazilian Fishes " 

 collected by Spix, Agassiz had cherished the hope of 

 some day exploring the basin of the Amazons and see- 

 ing Brazil. It may almost be called his hobby ; and 

 his relations with the Emperor of Brazil, with whom he 

 had exchanged letters on scientific subjects, so much 

 increased his desire that he resolved at the beginning 

 of 1865 to carry out his plan of a visit to Rio Janeiro. 

 His health had been gradually giving way ever since 

 his illness at Charleston in 1853; and the attack he 

 suffered at Cambridge in 1863 made it important for 

 him to seek a change of scene and climate, with resl 

 from work. Brazil was his lifelong desire, and towards 



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