Pretace of the Author. 
In Denmark, as elsewhere, losses caused by the sterility 
of cows are the object of persistent complaints among stock- 
raisers. In my country especially, where the raising of milk 
cattle is one of the chief economical resources, this path- 
ological condition is of prime importance. 
Working as a practitioner with many cases of sterile 
cows, I was successful in working out a technique, which 
enables me to eliminate those losses to a considerable extent, 
even to make them insignificant. 
This treatise contains my experience in the treatment of 
the sterility of cattle: it does not claim to be an exhaustive 
scientific elaboration on the subject, but intends only to 
incite others to further studies in this field, by making them 
acquainted with my observations and successes. 
I would be glad indeed if the publication of this small 
volume should achieve this end. 
Aakirkeby, Bornholm, Denmark. 
J. ALBRECHTSEN, V. S. 
