x PREFACE. 



accuracies of expreffion, or of conclufion, into which 

 the intricacy of his fubjecl, the general imperfection 

 of language, or the frailty he has in common with other 

 men, may have betrayed him ; and from which he has 

 not the vanity to believe this treatife to be exempt. 



PREFACE 



