
          lectures on embryology contain the 
 most original and fundamental confutation 
 of materialism I ever heard. 


 Now I am sorry you have been 
 so dilatory in extending your invitation, 
 on account of your Med. Coll. [Medical College] as well 
 as for the general good effect of his lectures. 
 For I fear you have lost him. 
 His audience have requested him 
 to give a short private course to 
 subscribers here, on any subject he
 chooses. In his good nature 
 he has consented, and will give 
 five or six lectures on the glaciers, 
 which will probably commence just 
 about the time you want him, 
 at least for the purpose of aiding your
 Med. Coll. [Medical College]. He cannot spend the 
 time you suggest in New York for the 
 purpose of making himself known that 
 he may obtain an audience, nor would
 be, I think, even if his time were not so 
 fully occupied. He is now hard 
 at work with Dr. Gould, at the work 
 we have been so long desiring to have

        