
          Lawrence Ville N.J. May 7th 1852

My Dear Sir,

Your welcome favour of 6th is received.
I called at your former residence in Princeton last Nov. a few
day after you left and I assure you was not a little disappointed
in not finding you there. I am aware you had goin to N. Y.
but where to direct a line I know not until now, else you had
heard from me long since. At what time of the week are you 
at Princeton and where? I have spent most of my leisure time
among the Cryps. [cryptogams] and have a number of undetermend lichenes.

Do you think Prof. Bailey of West Point would be willing to
aid me in these aned our fresh water Algae? I have no work
to refer to in regard to the latter. I wrote to Mr. Jackerman
a long time since but got no return from him. I also wrote
to Mr. Sallevant about the same time, but have had no reply.
By the way a moss that I sent to Mr. S. in my first letter
to him and which he called Hypnum [rulabulum?] (but with
which I was not satisfied) has since been sent to Mr. Welsau
England and he says it is a sp. nov. and names it Hypnum
depanperatum. I send you a specimen no1. I end other.
No 2 Tortulu papillase Wils. Mo. This is remarkable in having
the nerve of the leaf surrounded and covered with gemmae similar
to discription of Gymnostomum ovatum of Hooker & Say. page 21
Plate 7.
        