X PREFACE. 



In the notes which relate to his labors in Boston, 

 where, as he considered, his highest success was 

 obtained, such personal allusions are frequent. These 

 notes are important, not only as disclosing the asso- 

 ciations into which he was brought, but also as 

 revealing the intellectual processes and the feelings 

 involved in the preparation and delivery of his pub- 

 lic lectures. There is one circumstance which he at 

 least would have regretted. It has been impossible 

 to make mention of more than a fraction of the great 

 number of persons in different parts of the land, 

 whose names are coupled, in the manuscripts before 

 me, with some expression of gratitude or esteem. 



Without further explanation, I present these vol- 

 umes to the numerous relatives of Professor Silliman, 

 and to the more numerous and widely dispersed 

 family of his pupils, in the hope that they will prove 

 to be a not unsuitable memorial of his worth and 

 services. 



G. P. F. 



NEW HAVEN, March 1, 1866. 



