EDWARD TUCKERMAN. 498 
he was abroad, in the summer of 1842, to Hooker’s ‘“ London 
Journal of Botany.” Unfortunately, the interesting plant 
which he thus dedicated to his botanical associate, William 
Oakes, who well deserved such commemoration, proved to be 
a second species of Corema. In 1843, at Schenectady, he 
privately printed and issued his ‘‘ Enumeratio Methodica Cari- 
cum quarundam” (pp. 21, 8vo), in which he displayed not 
only his critical knowledge of the large and difficult genus 
Carex, but also his genius as a systematizer; for this essay 
was the first considerable, and a really successful, attempt to 
combine the species of this genus into natural groups. It is 
wholly in Latin, which he much affected for scientific disquisi- 
tion as well as for technical characters, and used with facility 
and elegance. In the same year also appeared, in the Ameri- 
can Journal of Science, the first of his “‘ Observations on some 
interesting Plants of New England.” This was followed in 
1848 by a second, and in 1849 by a third paper in the same 
Journal ; these containing, inter alia, his elaboration of our 
species of Potamogeton, then for the first time critically 
studied. These papers — with one or two in Hovey’s Maga- 
zine and elsewhere, at about the same date—may be said to 
have ended his work in Phznogamous botany, although his 
interest in the subject never died out; for when he accepted 
the chair of botany at Amherst he began the preparation of 
“ A Catalogue of Plants growing without cultivation within 
thirty miles of Amherst College,” which he published in the 
year 1875, the late Mr. Charles Frost of Brattleborough con- 
tributing the lower Cryptogamia other than the Lichens. In 
matter and form, as well as in typography (in which Profes- 
-sor Tuckerman had exquisite taste), this catalogue is one of 
the very best. 
But it was to Lichenology that his strength, as indeed al- 
most his whole life, was most assiduously devoted. When, 
in his youth, the active members of the newly organized 
Natural History Society of Boston divided among themselves 
the work of making better known the animals, plants, and 
minerals of Massachusetts, the study of the Lichens either 
was assigned to him or he volunteered to undertake it. From 
