xiv INTRODUCTION. 



stimulated me to write these sheets ; although 

 nothing but a long and great former practice, 

 attended with great application on my own part, 

 could have given me confidence to attempt a 

 work of this nature, and through which means 

 I am enabled to form a contrast between ancient 

 and modern improvements, and to recommend 

 such portions of each that may lead to benefi- 

 cial results and ultimate success. 



