PREFACE. ▼ 



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 statement of their forms, 

 habits, and results is therefore imperatively necessary for the 

 protection of the stock owner. This subject has accordingly 

 been brought up to the date of present observations, and 

 though short enough for the perusal of the busiest it will furnish 

 a sound basis for the limitation and destruction oi each ol 

 these noxious pests. 



