
          C [Cambridge] Aug. 3d, 1858 


 Dear Friend 


 I have not answered 
 your two last letters, because 
 I hoped you would come on 
 this week. 


 You had better come, & bring 
 on your mss. [manuscript] Mex Bound. [Mexican Boundary]. (Mr. 
 Campbell will let you have it for 
 the purpose) & look it over with me,
 only chance, if you go to printer 
 in August, & would save much time. 


 About Erigoneae. We have 
 settled all but one as I put them, 
 and now your E. [Erigonum] Fremonti must 
 be what Benth. [Bentham] called it, & what I 
 supposed it, viz. E. [Erigonum] brevicaule, Nutt. [Nuttall].
 Firstly your char. [character] now sent of
 E. [Erigonum] Fremonti, accords very well with 
 that of E. [Erigonum] brevicaule.  Then your original 
 specimen which I have, is intermediate 
 between the Engelmann plant and Geyer's
 no. 139, which is Bentham's E. [Erigonum] brevicaule
 & I presume Nuttall's, as it is so named 
 by B [Bentham] [added: in Hook. [Hooker]], and also by you in my herbm. [herbarium].
 It has yellow flowers, and so Nutt. [Nuttall]
 says of his plant. So we come 
 round to E. [Erigonum] brevicaule again, & you have 
 only to refer [Lorenzo] Sitgreaves plant back to that,
        