PREFACE TO THE FOURTH EDITION 



The reception accorded by the veterinary profession, to 

 the three prior editions of this little volume encourages the 

 author to prepare and publish a fourth edition under the 

 belief that it fills a certain need in veterinary literature. 

 As in prior editions, so in this, much of the material and 

 illustrations from Dr. Pfeifler's Operat'ions-Cursus are 

 retained, that fact alone indicating the high esteem enter- 

 tained by the author for his distinguished colleague. 



The volume is primarily designed for the use of -stu- 

 dents in laboratory surgery and embryotomy in which 

 the student performs the surgical operations described, 

 on animals procured for the express purpose, under 

 chloroform anaesthesia whenever possible, after which 

 the subject is destroyed while still anaesthetized. At 

 the same time it has been aimed to render the volume of 

 the greatest possible value to the practitioner consistent 

 ■with this plan. The operations included under this scheme 

 are necessarily limited to tbose which can be reasonably 

 well performed on comparatively sound animals of little 

 value and regularly procurable for laboratory purposes. 

 In the present edition the author has enlisted the hearty 

 collaboration of his former student, associate, and finally 

 successor. Dr. James N. Frost, Professor of Surgery. His 

 long experience as a teacher of surgery, his unquestioned 

 skill, and his enthusiastic devotion to progressive ideals in 

 his work add greatly to the value of the volume. The list 

 covers a wide range and is designed to give to the student 

 as thorough training as is practicable in a laboratory course 

 and includes well nigh all the more important varieties of 

 confinement, anaesthesia, disinfection, sutures, bandaging, 

 dressing and other adjuncts to operative work. The 

 chapter on trephining of the facial sinuses has been dealt 

 with at length in order to fully and clearly describe the 

 author's method of operating. 



