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School of Harvard University to carry on his botanical studies 

 under the direct supervision of Asa Gray. During his career at 

 both universities he had been making a specialty of the ferns, and 

 his first paper, published while still an undergraduate, described 

 three new species from Oregon and California, one of which had 

 been collected by his father. During his stay in Cambridge he 

 published papers on Japanese and Cuban ferns, and his inaugural 

 dissertation for obtaining the degree of B. S., in i860, consisted 

 of an enumeration of the ferns collected by Wright and Fendler, 

 in Cuba and Venezuela respectively, and additional forms collected 

 in Panama by Schott and Hayes. 



During the Civil War, Daniel C. Eaton was Clerk and In- 

 spector of Stores in the Commissary Department, U. S. A., in 

 New York, but in 1864 he was appointed to the chair of botany in 

 Yale College, on a foundation provided by his relatives and friends. 

 The Corporation of Yale University, in commemoration of his 

 long-continued and valuable services, voted, in 1898, to name this 

 the Eaton Professorship. At the date of writing no one has been 

 appointed to this chair. 



Notwithstanding his assignment to academic duties, Professor 

 Eaton continued his work on ferns most actively, preparing the 

 accounts of the Vascular Cryptogams for the several editions of 

 Gray's 44 Manual," for Chapman's "Flora of the Southern United 

 States," for Gray, Brewer and Watson's M Botany of California," 

 the 44 Ferns of the Southwest" in Wheeler's 44 Report" for the U. 

 S. Geological Survey, and numerous other smaller but no less 

 critical and valuable notes in various journals and proceedings of 

 learned societies. His crowning work in this line was, of course, 

 the two magnificent volumes of his 4 4 Ferns of North America," 

 with their eighty-one plates, most carefully drawn and colored, 

 and ample but extremely carefully prepared text. This work will 

 always remain a conspicuous landmark in our fern literature. 



After the publication of the 44 Ferns of North America," 

 Professor Eaton turned his attention more towards the Mosses 

 and Liverworts, groups which he had continued to study at the 

 same time with the ferns, but which had hitherto been more or 

 less subordinated. His collections of these plants was very ex- 

 tensive and he devoted a considerable time to the study of the 

 Hawaiian and Patagonian species of Hepaticae, but he published 

 little. These collections, together with additional materials, have 

 been partially made known to the world by Professor Eaton's pupil, 



