PREFACE 



T O 



THE THIRD LONDON EDITION. 



1 HE Reader fiiould be apprized, that many new pages 

 are interfperfed in this edition, which confift of practical 

 and theoretical obfervations, as the whole articles on He- 

 micrania idiopathica, retroverfio uteri, aneurifma, and 

 the appendix to the fection on Generation, beginning at 

 No. 8. as well as the diftin&ion between philofophy 

 and fophiftry in Seel: XV. i. 5. and the Ratiocinatio 

 verbofa, verbal reafoning, in Clafs III. 2. 2. 3. and fome 

 others. 



Derby, Jan. 1, 1801. 



o3" In the former editions of this work the Materia 

 Medica [which forms Part III.] was placed after the 

 fecond part, or the clafles of difeafes, but to preferve the 

 more equal fize of the volumes, in this octavo edition, the 

 publifher has placed it, with the aflent of the author, af- 

 ter the firft part. 



CONTENTS. 



