PREFACE. Vll 



part of the book ; in the Pharmacojiceia 

 are comprised, directions for forming 

 the various compositions in the most 

 convenient and efficacious manner, the 

 whole forming a systern of therapeutics, 

 instructing the inexperienced how to 

 distinguish the purest and most genuine 

 drugs, and to compound them in such 

 a way, as will enable him to combat 

 with success the various diseases tov/hich 

 horses are liable. 



PREFACE TO THE TfflRD EDITION. 



When the second Edition of the 

 Veterinary Materia Medica went to 

 the press, the Author was prevented by 

 severe illness, from adding the result of 

 his experience since the publication of 

 the first. The present ed;tion how- 

 ever, has been carefully revised ; and 

 he hopes that some useful additions will 

 be found in ir. 



