282 
EXTRACTS FROM FOREIGN PERIODICALS. 
The modus operandi is entirely unassociated with danger 
when carefully carried out as previously described. An old 
colleague, who had performed the puncture a number of 
years, but who had not continued the irrigation twenty-four 
hours, reports to me that in some cases after four weeks he 
had to again puncture. 
We lay the greatest stress upon the injection and subse¬ 
quent expression of the two per cent, carbolic solution ; when 
the contents are of such a consistency that they flow only 
with difficulty, it is possible that a second operation may be 
advisable.— Berl. Thier . Woch. 
SUPERFCETATION IN THE MARE. 
It is known that mares, as a rule, cease to be in heat at the 
termination of six to eight days following successful copula¬ 
tion, but that exceptionally they may at the end of several 
months become again “ oestral,” notwithstanding that they 
already be pregnant. This may also be asserted of cows with 
equal certainty. Various opinions are current as to whether, 
after the second copulation, as just stated, a real fructification 
of the ovum can be possible. Such a condition of affairs, con¬ 
ceding that it may occur, is designated superfoetation, as 
opposed to that state induced by several copulations at one 
time, and which is known as superioecundation. 
Pardou relates the case of a fourteen-year-old mare being 
covered in March by a jack, on the eighth of April again, and 
on the eighth of May by a stallion. Precisely eleven months 
after the second connection, and ten after the third, this mare 
became parturient in a double degree, bearing respectively a 
jack and a filly. The former died in three days, and the lat¬ 
ter never utilized the organs of respiration.— Rcpert. d. Thierh. 
_ _ \ 
INOCULATION FOR ANTHRAX. 
t I 
During the year 1890 the laboratory of Pasteur Chamber- 
lain supplied virus for 2,289 horses, 21,289 cattle, and 190,229 
sheep. Of the 939 horses reported upon, two died between 
the first and second inoculation, and one before the close of 
