[ iii ] 



THE 



EDITOR 



TO THE 



READER. 



^ I ^HE publication of this little treatife 

 has been delayed till now, by the 

 death of its author Mr. Forbes. 



The work was printed off under his 

 infpedtion ; and the following pages, that 

 precede it, were prepared for the prefs 



by him. 







A 3 The 



