
          Cambridge April 22d


 Dear Friend


 I was wondering what 
 had become of you, and if you were
 ill: but concluded you were more
 likely like myself, very busy.


 It must have been very 
 mean conduct of Le Conte. I 
 thought he was a better man
 than to agree to do a thing, 
 take advantage of it & then
 decline. I am sorry you
 did not give the course this year,
 or complete a full bargain with 
 Le Conte before you gave up.
 I now see not what you are to do
 with the apparatus.


 So Eliza is going to Washington.
 We were expecting her
 visit here. Now, we must wait till
 she comes back.


 Do all you can on the
 Mex. [Mexican] Boundary plants. I will
        