PREFACE 



TO THE 



PRESENT EDITION. 



IN this edition, the reader will find some 

 considerable additions ; but the chief 

 difference is in the arrangement, which 

 I am very conscious, was in many parts 

 extremely defective. Several of the chap- 

 ters in the first volume are entirely new 

 modelled ; and in the second, a great 

 deal of new arrangement has taken place, 

 especially in the middle part of the 

 last Essay. Those readers only (should 

 there be any such) who may have the cu- 

 riosity to compare the present with former 



TOL< I. b 



