
          Engelmann, in some specimens
 has called our Celtis (Acanthoceltis) 
 rhamnoides, n. sp. [nova species]


 Thank Mr. Thurber for
 his kind attention, [unwell?] too.
 He has my second letter.
 All I can say is, let him
 do the best he can.
 I am very glad he has got
 the 20 copies of Musci, & 
 the pay for Sullivant 
 for the rest.


 Yours ever
 Asa Gray

        