374 Veterinary Medicine. 



experimental transmission. The Scottish abortion committee 

 found that healthy pregnant cows often escape, though standing 

 near or even next to an aborting one, but that when a piece of 

 cotton wool was inserted into the vagina of an aborting cow for 

 twenty minutes and then transferred to that of a healthy one, the 

 latter invariably aborted. Galtier found that when the infecting 

 vaginal mucus of the aborting cow was transferred to the same 

 passage of the healthy pregnant one, abortion took place in the 

 latter. He succeeded in conveying the disease in this way from 

 cow to sow, ewe, goat, rabbit and Guinea pig, and found that 

 growth in the body of the rodent intensified its virulence, so that 

 it could then be successfully inoculated on the mare, bitch and cat. 



Bang subjected two cows, from healthy herds and three months 

 pregnant, to repeated injections of the products of the culture of his 

 abortion bacillus in serum glycerine bouillon. Three injections 

 were made on April 14, May 23 and June 4, and on June 24 one 

 cow aborted. The other sickened and when killed was found to 

 carry a dead foetus. Pure cultures of the abortion bacillus were 

 found in the foetal membranes and liquids of both animals. 



Casual Infections. In a case which came under the ob.serva- 

 tion of the present writer, a family cow kept in a barn where no 

 abortion had previou.sly occurred, was taken for service to a bull 

 in a herd where abortion was prevailing, and though she was 

 only present at the latter place for a few minutes, she aborted in 

 the sixth month. 



Another cow from the same aborting herd, was taken into 

 another herd at a distance of two miles, where abortion had been 

 unknown up to that time, and some months later the cow stand- 

 ing in the stall next to her aborted. The remainder of this herd 

 was sold soon after, so that the further progress of the disease was 

 not traced. 



Tobiassen quotes the case of a cow from an aborting herd, which 

 calved a fortnight before the regular time. The calf was at once 

 sent to another farm where no abortion had occurred, and placed 

 in the same building with the pregnant cows, all of which later 

 aborted. The outbreak thus started lasted for several years. 



Jansen as quoted by Sand, reports the case of a cow from an 

 aborting herd having been taken into a herd that had been pre- 

 viously quite free from the disease. SoOu after her arrival she 



