Vi PREFACE. 



hitherto explained. Such a work ap- 

 peared to the author a desideratum in the 

 veterinary art, and has induced him to 

 add the present volume to his Com- 

 pendium, of the Diseases, &c. of which 

 the indulgent public has already de- 

 manded an eighth edition. Having 

 thus ventured on untrodden ground, 

 he had no guide to lessen the labour of 

 the attempt ; but, by numerous and at- 

 tentive trials, from the author's expe- 

 rience, and particular attention to this 

 subject, he trusts he has been able to 

 furnish a volume not wholly unaccept- 

 able even to the experienced practi- 

 tioner. It has been the author's aim to 

 explain the general properties of the va- 

 rious substances employed in medicine, 

 accurately describing their particular 

 effects on the body of the horse, both in 

 health and disease ; the doses in which 

 they may be given, their composition, 

 and in short every thing that has any 

 relation to them. This will be compre- 

 liended in the Materia Medica, or first 



