Be 
I practiced not only in Bornholm, but also in Fuhnen, 
Langeland, Falster, Méen, Seeland and in Schonen. No- 
where did I see a transmission of that kind, finding, however, 
quite often a preputial catarrh in the bull. Many of my 
colleagues had the same experience, but Martin Poulsen does 
not mention that method of transmission at all. 
It has been mentioned quite frequently that it is not 
difficult to get cows with a follicular vaginitis pregnant; the 
two important factors are really the metritis of the cow and 
the quality of the bull. 
The acute form of the granular disease is not at all com- 
mon in our part of the country, and, if present, does not 
always cause sterility. So there is hardly any probability 
that the chronic and mild form should be the persistent 
cause in so many sterility cases. 
How then is chronic endometritis the cause of sterility? 
Admitting that in the majority of sterile cows a metritis 
is present, and that pregnancy becomes possible if the metri- 
tis is eliminated, there are still a number of conditions to be 
considered. 
As I mentioned before, the endometritis may take a dif- 
ferent course in different animals; it may be located in the 
uterus proper or in the cervix; the amount of secretion may 
differ; there may be complications in the form of a real 
metritis or perimetritis, and, finally, the ovaries may be 
involved to a certain extent. 
It is therefore necessary to find in all cases the real cause 
of sterility and to then apply the proper treatment. 
In most cases the sterility is caused by one or several of 
the following conditions: 
1. Stenosis of the cervix, of the uterus horns or of the 
oviducts. They are caused by lesions of the portio vagin- 
alis, of the cervical canal, or of the two orificia, by swelling 
of the mucosa in any part of the uterus, connected with an 
increased and pathological secretion. 
