VETERINARY MATERIA MEDICA AND 



THERAPEUTICS. 



INTRODUCTIO:^. 



Pharmacology is that science which treats of the 

 drugs employed in medicine, and, therefore, em- 

 braces all of materia medica and therapeutics per- 

 taining to drugs. It is supplemented by 



Pharmacy, the art of preparing drugs in accord- 

 ance with the requirements of the pharmacologist and 

 of dispensing them on the prescription of the thera- 

 peutist. Pharmacy, therefore, must embrace a thor- 

 ough knowledge of materia medica, a good idea of 

 the theories and manipulations of chemistry, and an 

 intimate practical experience in many operations pe- 

 culiar to itself. 



Materia Medica is that branch of pharmacology 

 which treats of all substances used as medicines, de- 

 scribing their origin, composition, chemical proper- 

 ties, physical characteristics, modes of preparation 

 and administration, and their physiological and toxi- 

 cological actions. 



It is divided into Pharmacodynamics and Toxi- 

 cology. 



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