8 PREFACE. 



pages have been collated with, especial reference to 

 the wants of both these classes of inquirers. 



Some pages, not mentioned as quotations from 

 other writers, may be recognized by the reader as 

 having already appeared in the columns of different 

 newspapers. All such were written by myself. 

 Where the labors of others in the same field of 

 inquiry have been used, the proper acknowledg 

 ment has been made. 



