DEDICATION. 



.* i 



To the candid and ingenious Members 

 of the College of Phyficians, of the Royal 

 Philofophical Society, of the Two Uni- 

 verfities, and to all thofe, who ftudy the 

 Operations of the Mind as a Science, or 

 who praftife Medicine as a Profeffion, 

 the fubfequent Work is, with great ref- 

 pe6l, infcribed by the Author. 



Derby, May i 3 1794. 



