
          Cambridge, May 23rd, 1855 


 Dear Doctor


 I was in Boston all this 
 morning and so did not get your 
 letter of the 21st till dinner time,
 too late for to-days mail. 


 I have pupils all this afternoon, 
 to-morrow all the morning 
 is occupied by lecture & recitations, 
 and classes in the afternoon, 
 so that I can not do little towards 
 finishing the Pope things 
 till Friday morning. To-morrow,
 with this, I will send you 8 or
 9 of the drawings, arranged for 
 4to [quarto].


 You have only very lately
 told me what to use for the 16th 
 plate [added: only a letter of May 7th], and so it is not much our 
 fault here that we are not all 
 ready. 


 I'll try to fix up that doubtful
        