ADVERTISEMENT. 



It was stated in a former Advertisement,* that the Second 

 Part of Mr. Stewart's Dissertation on the History of Meta- 

 physical, Ethical, and Political Philosophy, would accom- 

 pany the present Half-Volume. Circumstances having 

 rendered it necessary to postpone the appearance of that 

 Part, till a later period in the progress of this Work, it 

 was agreed, that the remaining Part of Professor Play- 

 fair's Dissertation on the History of the Mathematical 

 and Physical Sciences should, in the mean time, take its 

 place. It is to this arrangement, that the World is in- 

 debted for a Piece, which, though it only forms part of 

 a greater design, cannot but be regarded as a most valu- 

 able contribution to the History of Science ; whilst it de- 

 rives a melancholy interest, from its being the last literary 

 object that employed the talents, and engaged the solici- 

 tude, of its eminent author. 



* Advertisement to Volume Third, of the Supplement to the 

 Encyclopaedia Britannica. 



