24 LOUIS AGASSIZ. 



two brothers separated, Auguste returning 

 from Zurich to Neuchatel, where he entered 

 into business. It chanced, however, that in 

 one of the first acquaintances made by Louis 

 in Heidelberg he found not only a congenial 

 comrade, but a friend for life, and in after 

 years a brother. Professor Tiedemann, by 

 whom Agassiz had been so kindly received, 

 recommended him to seek the acquaintance of 

 young Alexander Braun, an ardent student, 

 and an especial lover of botany. At Tiede- 

 mann's lecture the next day Agassiz's attention 

 was attracted by a young man who sat next 

 him, and who was taking very careful notes 

 and illustrating them. There was something 

 very winning in his calm, gentle face, full of 

 benevolence and intelligence. Convinced by 

 his manner of listening to the lecture and 

 transcribing it that this was the student of 

 whom Tiedemann had spoken, Agassiz turned 

 to his neighbor as they both rose at the close 

 of the hour, and said, "Are you Alex. 

 Braun ? " " Yes, and you, Louis Agassiz ? " 

 It seems that Professor Tiedemann, who must 

 have had a quick eye for affinities in the 

 moral as well as in the physical world, had 

 said to Braun also, that he advised him to 

 make the acquaintance of a young Swiss natu- 



