
          I am unable now to do any thing 
 about Polemoniaceae & Hydrophyllaceae.


 Erythraea. It is some years since
 I studied them at all, and much material 
 has accumulated since. 


 If I could possibly command time I 
 would do them for you, tho' I have
 now no definite notions about them, 
 except that our species do not belong to 
 E. [Erythraea] Centaurium of Europe. That we have 
 only as an introduced species. 


 I send you my old mss. [manuscript], from
 which you will see how I then regarded 
 them. Benth. [Bentham] [crossed out: in?] Sulph. [The botany of the voyage of H.M.S. Sulphur] has been published 
 since. 


 Well. Here is a reason against retaining 
 letters a month or two. On the plates,
 before printing the School & College Ed. [Edition]
 of Manual, I could have corrected that 
 great blunder of mine you point out to 
 me, about Verbena hastata & urticifolia,
 a gross blunder it is, & I am much 
 obliged to you for pointing it out. 


 So, you see. I blow you up in return
        