INTRODUCTION. 



IN describing the various substances used in 

 Kiediclne, it was thought adviseable to adopi an 

 alphabetical order, in preference to those more 

 scientific modes of arraDgemcnt which have been 

 recommended by medical writers, as not only 

 more simple, but better adapted to the general 

 reader. In this part of our work, hov/ever, it will 

 be necessary to bring the compositions or formulas 

 under certain classes ; the receipts for Pliusic, 

 for example, will come under the head Ca:har-' 

 tics ; but these classes will be placed alphabetically. 



In the Materia Medica, all the simple vege- 

 table medicines have been faithfully described, 

 their particular effects upon the horse pointed out, 

 and the different doses in which they may be give a 

 with safety and advantage, accurately noticed ; at 

 the same time, such obsei'vations have been intro- 

 duced respecting the diseases in v/hich the medi- 

 cines are applicable, as appj:ired requisite j all 

 those chemical preparations which are eliipioyed 

 in the practice of medicine arc likewise iully des. 

 ciibed. 



