THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 245 
England—but does not intend to publish it for several years; 
Some Monographs will probably appear first. 
Dr. Lewis Beck has not yet given to the public his promised 
work on the Ferns & Mosses of the United States [8]—nor do I 
think it will appear very soon. I do not see how it is possible 
that he can be qualified for so difficult a task as the one whlich] 
he has undertaken. The only essay he ever made of his powers 
in CRYPTOGAMOPHYTOGRAPHY is his paper on the “Gre- 
villeanum”’ published two or three years ago in Silliman’s Jour- 
nal [9], a moss which turns out to be the Timmia Megapolitana! 
His catalogue of Ferns is by no means complete, and that of the 
Mosses, very imperfect. He made out the latter from Schwäg- 
richen’s book [66], marking every species said to have been found 
in the United States.— 
By the way, speaking of mosses, I have now in my possession, 
a beautiful collection of about 300 mosses collected by Drummond 
in the British possessions of N. America and named by that 
botanist under the immediate eye of Hooker.[*] The plants are 
beautifully put up in three bound volumes with a manuscript 
catalogue & index. A few Sets are for sale still, I believe, in 
Scotland. I shall take immediate steps to procure a copy—the 
one which I have in my study has just arrived for a gentleman at 
the North & is intrusted to my care. 
Have you heard of Hooker’s new work on the plants of British 
America [34]? It includes all the plants collected by Richardson 
in Franklin’s 2nd exped"—together with every thing before 
published concerning the botany of the region mentioned. The 
Ist No. in toto with numerous excellent plates has been received 
by one of our booksellers, but we are all too poor to purchase it— 
especially as in doing so we must subscribe for the subsequent nos, 
of which] there will be 12. The price of each is $6.! The plants 
C sres Sir William Tadon Notice concerning Mr. Drummond’s collec- 
tions, made in the southern and western parts of the United States. Jour. Bot. 
I: 53 BOSNA 1834 
Musci Americani, or dried specimens collected in British North America, 
and chiefly among the Rocky Mountains, during the Second Land Arctic Expedition, 
under the command of Captain Sir John Franklin, R. N., by Thomas Drummond, 
Assistant-Naturalist to the Expedition.’ In 2 volumes, quarto.”’] 
