PREFACE TO THE EIGHTH EDITION. 



The " Farmei''s Yeterinaiy Adviser " has been so favor- 

 ably received in America, Canada, and England that I feel 

 called upon to issue a revised edition, to cover the ground 

 over which Veterinary Medicine has advanced in the past 

 eleven years, since it was first published, and thereby to 

 continue to deserve the confidence hitherto accorded it. 

 The advances of the past decade have been marvelous 

 indeed, but most largely in the field of contagious diseases 

 and their prevention, and to meet this progress, I have in 

 the present edition added two complete chapters devoted 

 to this subject. The third chapter has also been consid- 

 erably enlarged by the introduction of additional plagues, 

 which either exist on the North American Continent or 

 are specially liable to be introduced through the ordinary 

 channels of trade. The changes in the remaining part of 

 the book are less extensive, but they will be found to add 

 materially to the fullness and clearness of the work as a 

 whole. 



Some of the changes made may not be fully appreciated 

 at first sight by the average farmer, yet they were consid- 

 ered essential for two reasons, first, the adaptation of the 

 work to the purpose to which it has been largely put as a 

 veterinary text-book in agricultural colleges ; and second, for 



