232 
M. G. HAYEM. 
J>. Amongst some animals inoculated in November, 1880, 
were five cows which had been put to the hull in September, two’ 
months before the intra-venous inoculation. All the cows had 
calves, and their gestation was normal, except in one, which 
calved at eight months. The calf lived. 
The five calves were inoculated twelve to sixteen days after 
birth, with very strong virus. None were sick, and the local ac¬ 
tion of the virus was unnoticed, the general effect beinsr insignifi¬ 
cant. ° 
It is consequently established that a female of the bovine 
species which receives immunity against bactorian anthrax during 
the first month of gestation transmits it to her product. We are 
unable to say if she would also transmit it to the products of 
other gestations. 
C. There are, however, two observations on the subject which 
may prove to involve certain important suggestions. 
Two of the cows inoculated in November, 1880, had not been 
fecundated when covered in the preceding September. They 
were again presented to the bull, after being inoculated, one 
twenty days, the other three and a half months, after the preven¬ 
tive inoculation. The bull was also enjoying immunity through 
a previous inoculation. The two calves which came from these 
cows also resisted the effect of inoculation with strong virus. 
-Did the immunity in these cases originate with the cow or 
the bull ? Other experiments will solve this problem.— -Ga¬ 
zette Medicate. 
UPON THE MECHANISM OP THE STOPPAGE OF HEMORRHAGES. 
By M. G. Haykm. 
In the cases of wounds of a blood vessel, the hemorrhage, 
great at first, diminishes by degrees, and then ceases. This result 
has been explained by contraction of the vascular coat. But can 
this be sufficient ? Then the coagulation of the blood has been 
considered as one of the causes. A moment’s reflection will, 
however, show that in the stoppage of the flow of blood by the 
formation of a clot there is something peculiar, whose mechanism 
