
          much better than any thing I had before. I find many
 new genera such as Geastum, Fuligo, Scleroderma, [?]
 Leotia etc. the latter a curious species growing in clusters
 on the top of a decaying agaricus. As to the Agarics
 I despair of finding them out. Some genera I cannot
 determine. I enclose a specimen of one I found a day or
 two since among the decaying chips in a wood yard about
 4 or 6 inches below the surface. When first dug it resembles
 exactly in colour & form the roots of [Comallaria?] multi
 -flora . having however more fibres. On exposure to the air
 it becomes reddish. The substance of the fungus looked
 precisely like ^ [inserted: the meat of] a green chestnut. [remainer of line crossed out]
 although less hard. & the center of it contains a small
 proportion of jelly. It is not possible I think that it should
  be a spaeria! nor can I refer it more satisfactorily to a
 Sclerotium.


 I have collected the past summer more [word missing, page torn: [than?]]
 fifty specimens of the little Botrychium of [word missing, page torn]
 you formerly [?] specimens _ And I have [page torn, word illegible]
 any doubt but it is a new species to which I take the
 liberety of proposing the name B. simplex. The [frond?] is always
 simple & usually 3[?] or 3 lobed. And this appears to be
 its chief distinction from all other species of Botrychia_
 So confident am I that it is a nov. sp. that I have thought of sending a drawing
 of it to the Am. Journal of Science.


 I have a hundred specimens or more of cryptogamia
 which I wish to send you now but  really have not time
 to put them up. I have been exceedingly occupied
 for 6 months past with a geological map & memoirs of
 the [?] It extends from N. Haven to [Billons?] Falls
 N. Hampshire ^ [inserted: 150 miles long and] about 30 miles wide and has 15 different rocks
 [coloured?] on it. I exhibited it to the Geological Society in
 September & it will appear soon I trust in the Am.
 Journal of Science.
        