
          Cambridge, March 29, 1850.


 My dear Doctor,


 I was very glad to hear from you 
 at last, for I really began to feel uneasy. 


 Yesterday I sent off the two drawings to Prestele
 in a parcel I was sending. 


 I am puzzled what to make the 10th Plate out 
 of. There is no new genus of Compositae of Fremont's
 that I know besides Hymenoclea, unless we go back to the 
 former journey; & of those Nicollettia, which I should
 most like to figure, the specimens are too poor, at least
 mine is. So I only think of Amphipappus, an interesting
 genus enough, but hardly peculiar enough to need a 
 figure. I have a decent specimen of that, & will 
 figure it, unless you direct me to use Hymenoclea
 monogyra to complete that very curious genus although 
 Fremont did not get that species. I could figure that 
 from splendid specimens brought by Wright. But I 
 shall take Amphipappus unless you direct me to
 the contrary, & [added: possibly] figure the other in Wright's plants myself.


 No 8 I dont recollect your asking me to say how it 
 differed from Prunus. And the drawing is not here so I 
 cant say now, except I remember it had no style. It must 
 be different. 
        