260 STATE BOARD OF AGRICULTURE. 



FOREWORD 



The first three papers of this bulletin represent the results of the 

 efforts of I)r. H. J. Stafseth on the abortion problem for the year 1919. 

 It is proper to state that the author began this work immediately 

 upon terminating his connection with the Veterinary Corps of the 

 U. S. Army after being out of touch with the problem for over 

 two years, and finished his work rather abruptly because of a 

 leave of absence granted him to enable him to accept a veterinary 

 position with the Norwegian Government. None of the problems dis- 

 cussed in these papers is fully settled but for the reason indicated above 

 it is thought advisable to offer this material for publication. Dr. 

 Stafseth has made a distinct contribution to the scientific understand- 

 ing of bovine infectious abortion as a result of his brief but careful and 

 intensive studies. 



Mr. I. Forest Huddleson, now in charge of the abortion investiga- 

 tions, is vigorousl}^ jiursuing these same lines of research and reports 

 on his findings in one of the projects in Part IV. 



WARD GILTNER. 



