
          has lately described it, but in
what work I do no now
recollect. I always thought
it new but could never get
you & Gray to think so.

Capt. [Charles] Wilkes has sent me the
mosses & hepaticae of the U.S.
Ex. Ex. - a very handsome collection 
it is considering there was no
bryologist in the expeditions.
The specimens are pretty full
& excellent preservation &
will turn out I think nearly
400 species. My compensation
for preparing them for publication
        