APPENDIX B. 253 



1849, Boston. It was drawn on stone, by A. Sonrel, from a da- 

 guerrotype. The likeness is not satisfactory. This is the first time 

 that a facsimile of his signature was published under the portrait. 



After 1859, man y photographs were taken, more especially by 

 A. Sonrel. All are good likenesses. I shall mention only the 

 larger ones. A large sized one was taken in 1863, and has circu- 

 lated much among his friends and students. A reduction of it is 

 engraved as a frontispiece of Agassiz's "Geological Sketches," 

 Boston, 1870. 



Another full-length photograph was taken in 1869, representing 

 Agassiz, Professor Benjamin Pierce, then Superintendent of the 

 United States Coast Survey, and Captain Carlisle P. Patterson, 

 Chief Hydrographer of the Coast Survey; all three are seated. 



The same year, 1869, another large photograph represented 

 Agassiz seated and looking at a globe, on which Professor Pierce, 

 who is standing, points out the Gulf Stream above the Pourtales 

 Plateau. Both portraits are excellent. The one of Agassiz, repre- 

 senting him almost in profile, has been reproduced since by Justin 

 Winsor in his Vol. I., p. 373, of his "Narrative and Critical His- 

 tory of America.'" 



A cabinet photograph was taken at San Francisco by Watkin, 

 in 1872, just after his arrival from his voyage in the Hassler. A 

 good photograph of Mrs. Agassiz was made at the same time. 



Another cabinet photograph, in 1872, the last made by Sonrel, 

 is a splendid profile of Agassiz ; it was taken especially for the 

 engraving of the large bronze medal at Neuchatel, by Professor F. 

 Landry. I give it as the frontispiece of Vol. I. 



Among the numerous cartes de visile, I may mention one taken 

 in 1863, representing Agassiz seated, with manuscript in his left 

 hand ; it is remarkably well executed, showing his peculiar attrac- 

 tive smile and brilliant eyes. Another taken at the same time, 

 represents him in front of the blackboard and lecturing before 

 his pupils, with an echinide drawn in white chalk on the black- 

 board. Eight years later another photograph represented Agassiz 

 and Pourtales together seated at a table, on which lie a book, a 

 stone, and specimens of echinoderms ; Agassiz holds an echinus 

 in his left hand, and in the right hand a lens, through which he is 



