90 
I have made the tabulations so explicit that each animal 
can be followed up; the reason is that I believe the treat- 
ment of aborting cows to be especially important, and often 
very much neglected. It is well known that infectious abor- 
tion plays an important role in the sterility question; at least 
it takes a long time to get cows pregnant which have 
aborted, and sometimes it is extremely difficult, so that the 
revenue from these animals is considerably diminished. If 
these animals abort a second time there is no profit at all. I 
have therefore attended to all the abortion cases which hap- 
pened in the herds I had under treatment. At first I met 
frequently with septic metritis following an abortion, in 
which the secundinae had not been removed and the uterus 
had not been disinfected. Now on all the estates referred to 
here the necessary measures were undertaken after each 
abortion, 
The tabulations indicate that it is not very difficult to get 
the cows which have aborted pregnant again, as 179 out of 
213, or 85%, conceived. They prove further that the time of 
conception is not considerably retarted, even if many ani- 
mals had to be bred several times on account of lesions on 
the cervix’and on the orificium. Only 11 cows aborted a 
second time, while 93 carried out their calves. When the 
records were made a number had not yet finished their preg- 
nancy, but on the basis of earlier experiences I do not ex- 
pect many of them to abort. 
On the large estates, with the exception of the herd in 
Gronslettegaard, a relatively small number of animals has 
aborted. It was to be expected that in the larger herds the 
spread of the infection was not so quick as in the smaller 
ones, and accordingly the losses smaller. 
These results are a sufficient proof that infectious abor- 
tions do not need to be accompanied by considerable losses 
and that we have a means in the proper treatment of pre- 
venting most of them. If all the cows which have aborted 
come at once under the treatment indicated the metritis 
