Preface. vii 



of turpentine in large doses is purgative and vermifuge, in 

 small ones diuretic, stimulant, and antispasmodic. Atten- 

 tion must also be given to the age and size of the patient, as 

 more fully set forth in the Appendix. 



Illustrations have been freely introduced to render the 

 text more lucid, and, being selected from those prepared 

 for the Author's larger work, may be implicitly relied on. 



In the list of contagious diseases are included not only 

 those that are habitually developed on American soil and 

 those already introduced from abroad, but also such as pre- 

 vail in Europe, and are liable at any time to be brought 

 into our midst by importation. It is no less imperative 

 that the American farmer should be forewarned of pesti- 

 lences that threaten him from abroad, than of those that 

 beset him at home. For all such affections the principles 

 that should guide us in preventing and extinguishing the 

 disease are concisely but clearly set forth. 



All the important parasites are introduced, and their con- 

 ditions of life and individual metamorphoses in and out of 

 the bodies of domestic animals referred to, as well as their 

 migrations from man to animals and from animals to man 

 wherever such exists. The vast importance of animal para- 

 sites is only beginning to be realized in connection with 

 their frightful ravages in countries (England, Australia, 

 Buenos Ayres, Egypt, Abyssinia, Iceland, India, etc.) into 

 which they have been introduced, or where they have 

 been allowed to increase unchecked, and a concise state- 

 ment of their forms, habits, and results is therefore im- 

 peratively necessary for the protection of the stock-owner. 



