PREFACE TO EIGHTH EDITION 



I wish to thank my many fellow teachers who have shown 

 appreciation by continuing to use this textbook in spite of inac- 

 curacies and evident need of revision. I wish to emphasize again 

 the fact that Veterinary Studies is intended to some extent as a 

 teacher's outline. Each teacher must add material as he may 

 think wise, or leave out entire subjects according to local needs. 

 I find that very many pupils taking veterinary class work in ag- 

 ricultural schools need review work on physiology. The necessity 

 for a practical working knowledge of physiology is evident. 

 Some knowledge of anatomy is plainly necessary in order that 

 disease processes may be located, and that students may under- 

 stand animal conformation. Some elementary pathology is 

 absolutely necessary in order that pupils may have some under- 

 standing of what disease processes really are. 



Causes and prevention of diseases should be considered as of 

 paramount importance, and only carefully selected diseases 

 should be presented. These should be diseases which are uniform 

 in symptoms and history and therefore easily recognized, and of 

 such diseases, those that are rather easily and simply treated or 

 are preventable. 



There may be perhaps exception to this, in case of stock 

 owners who do not have access to trained veterinarians. In 

 such case it is a matter of plain common sense that they must 

 do the best they can for. themselves. 



However, we veterinary teachers of agricultural students 

 should have constantly in mind the fact that we are educating 

 expert stockmen — not poorly trained quack veterinarians. The 

 student who has had a proper course should better appreciate 

 the competent veterinarian and call him more promptly and 

 intelligently. 



Appreciation is due Dr. E. A. Hewitt, of the College of Agri- 

 culture, University of Minnesota, for reviewing and criticizing 

 the lectures on anatomy and physiology. 



M. H. REYNOLDS. 



University of Minnesota, 

 September, 1922. 



