Abortion. 
bY Girl. ReAGH. 
The expulsion of the foetus at any time before the comple- 
tion of the full period of normal pregnancy is termed abor- 
tion. The disease is dreaded by the breeder and dairyman, 
resulting as it does in the loss of the offspring and usually a 
diminished milk production. Contagious abortion varies in 
virulence due to varying potency of the germ, or to the sus- 
ceptibility of the animal to attack. Sometimes every female 
in the herd will slink her calf, and again only a portion of the 
herd will be effected: The disease is often introduced into 
a healthy herd by the purchase of an infected animal, or 
through the bull being allowed to serve an aborting cow. The 
treatment for this disease is an isolation of all aborting ani- 
mals and a thorough and continuous disinfection. 
ABORTION IN- COLLEGE HERD. 
1. The disease was purchased. In 1903, six pure bred 
pregnant animals were added to the herd, and shortly BS: 
two aborted. 
2. During the next three years twenty-four of the seventy- 
nine calvings were premature births. These figures 
Normal Premature Total 
Calvings, Births. Calvings. 
nratany Catia aceite, ale bie 14 12 205% 
BECO Vedi. Seas, «loss 20 7) 27 
pir diney Cath ele. vic 73155 21 5 26 
% 
Tota leedl Supra ois 55 24 70 
indicate that the contagion was not extremely virulent in 
this case or the treatment delayed to some extent the gt O- 
gress of the disease. 
