148 Mr. H. H. Howorth on 



Helvetique," 1837-38, etc.), and he concludes that the 

 polished surfaces in the Jura, and the erratic blocks, 

 are the result of the action of a great field of ice, "Ein 

 grosses Eisfeld " (id. 46). He extended his researches else- 

 where than to the Jura, and tells us erratic blocks are scarce 

 in the Black Forest, but he had found some of them, 

 in 1826, near Lake Tili, above Hollenthal, and he had also 

 found them about Carrigou, in the Pyrenees, in 1825 (id. 

 49 and 50). 



This letter clearly shows who was the originator and 

 who the mere disseminator of the new views. Agassiz 

 himself, in his address, speaks of his theory as a fusion of his 

 own views with those of Schimper, and refers to an unpub- 

 lished memoir by his friend. Even this scanty acknow- 

 ledgment, however, was itself very shortlived, and when 

 Schimper wrote to complain that the press were attributing 

 to Agassiz what had been the work of his own hands, he 

 replied that he did not read the newspapers, and was not 

 aware of their contents, but that the printed report of the 

 society's proceedings would put everything right. When 

 Agassiz published his well known " Etudes sur les glaciers," 

 in 1840, it will hardly be credited that he did not even refer 

 to his friend, and the process of ignoring him, in spite of 

 protests, he carried out to the end. 



Braun was a friend both of Agassiz and Schimper, and 

 cognisant of the facts. He was too timid to interfere, how- 

 ever, although a letter is extant which he wrote to Professor 

 Roper, at Rostock, dated February 22nd, 1840, in which he 

 says, speaking of Schimper, " Agassiz und Charpentier, die 

 in dieser Sache jetzt das Meiste thun, sind, wenigstens was 

 die allgemeine Ausdehnung der Ansichten und die tieferen 

 physiologischen Gedanken dabei betrifft, seine Schiller." 

 Agassiz himself, in a letter to Braun, accompanying a copy 

 of the work last cited, and subsequently included in Braun's 

 " Life," published by his daughter, writes the following extra- 



