150 REPORTS OF CASES-EXTRACTS FROM FOREIGN PAPERS. 
its virulency. This theory is inferred from the following ex¬ 
periment : ground possessing a high degree of tetanic viru¬ 
lency becomes inoffensive when triturated and exposed during 
three days to the temperature and diffused light of the labor¬ 
atory.— Ibid. 
REPORTS OF CASES, 
‘ ‘ Careful observation makes a skillful 'practitioner, but his skill dies with him. By 
recording his observations he adds to the knowledge of his profession, and as¬ 
sists by his facts in building up the solid edifice of pathological science .”— Vet- 
I erinary Record. 
TWIN-ABORTION IN A MARE. 
By C. E. Hollingsworth, Y.S., La Salle, Ill. 
Some time ago a peculiar case came under my notice, 
which may prove equally as interesting to others. 
A mare belonging to a farmer living near here was bred 
in June (I have not exact dates) and all went well until 
November, when one morning they found a dead colt lying 
at her heels. He thought, of course, that it was “all up with 
her’’ for that year, but was surprised some time afterward to 
see unmistakable symptoms of her still being pregnant. This 
second foetus was carried through almost the full period of 
gestation, when it, too, was aborted. 
An M. D. said it occasionally happened in the human 
family, but this is the first I was aware it ever took place in 
the equine race. Heretofore my opinion had been that it was 
an impossibility in the mare to cast one and carry the other 
any great length of time. 
EXTRACTS FROM FOREIGN PAPERS. 
CONTAGIOUS PLEURO PNEUMONIA IN A GOAT. 
By Professor Dessart. 
The case here described by the Professor was reported to 
him as having occurred in a barn where, out of six cows, two 
had been destroyed in consequence of an attack of pleuro¬ 
pneumonia. The goat was two years old, and when taken sick 
