INTRODUCTION. 5 



pressed, persuaded several of his friends 

 that his letters in more permanent form 

 would be welcomed by former readers and 

 find appreciation in wider circles. In this 

 belief we present them just as they came 

 from his pen, with but the corrections of 

 a careful proof-reader. We have added 

 a letter on another topic, which seemed 

 to us of interest 



R. H. 



C F. A. 



C. M„ R 



Worcester, Mass., 



November, 1889. 



