ii Introduction. 



As in that book, so in this it is to the novice that I 

 especially address myself. Though it is hoped that the 

 expert may find in the following pages matter not un- 

 worthy of his consideration, still it is those that seek, 

 rather than those who have already found, whom I aspire 

 to direct. 



For the labor expended on this volume, I desire no 

 more grateful reward than the same kindly reception 

 which has been the good-fortune of its predecessor. 



HENRY P. WELLS. 



