X]l 



PREFACE. 



no meaning in them at all ; and yet there 

 are fome objediions to this explication. 



I cannot, in juftice, negleft to acknow- 

 ledge my obligation to my worthy friend 

 Mr Arthur Lee *, for his kind afiift- 

 ance ; a gentleman who will be a Angular 

 credit to this univerfity, and a blefllng to 

 to that country in which he fhall hereafter 

 praftife the healing art. 



The reader will eafily do me the juftice 

 to believe, that vanity could have no in- 

 fluence in perfuading me to the publica- 

 tion of a work, the compofition of which 

 required neither genius nor learning. 



* A native of Virginia; he obtained Dr Hope's 

 prize-medal, for the beft hortus Jjccus in the year 

 1765. 



CLAVIS 



