Preface of the Translator. 
The ravages of the infectious abortion disease in the 
United States are well enough known to every man con- 
nected with the agricultural industry. This English edition 
of Albrechtsen’s little book on the sterility of cattle is being 
undertaken in appreciation of the fact that the chief losses 
from infectious abortion are losses through the resulting 
sterility. 
Albrechtsen, whose work has been widely recognized in 
Europe, is able to demonstrate the curability of the general 
sterility case; and, with the elimination of this phase of the 
trouble, the damages done by infectious abortion would be 
trifling compared with what they are now. 
The translator believes, therefore, that he is rendering a 
service to the practitioner as well as to the stockraiser; and 
hopes that sterility cases will be approached with the same 
basical knowledge and confidence as any other well treated 
ailment. 
He would especially like to point out the difference be- 
tween Albrechtsen’s conception of the real cause of sterility 
on the one hand, and the conception of Hess on the other. 
Albrechtsen defends his point of view very well, and I have 
little doubt that the experienced practitioner will find his 
own observations bearing out the former. 
Washington, D. C., July, 1917. 
DR. H. WEHRBEIN. 
