438 THE STOCK owner's ADVISER. 



diseases. German pathologists held for a considerable period 

 that the disease was a precise counterpart of typhoid or enteric 

 fever. Dr. Murchirons, however, successfully combated the 

 theory, pointing out its error, and declaring that it had no re- 

 semblance to typhoid fever, tyj^hus, scarlatina, erysipelas, in- 

 fluenza, or dysentery, but that it resembles small-pox. He was 

 so enthusiastic in his theory that it led to the belief in vaccina- 

 tion as a preventive, and during the plague of 1866 the cattle 

 were immediately vaccinated throughout the country; but it 

 proved a total failure. 



Symptojfs. — The fever, as s'hown by elevation of the tem- 

 perature, begins when the poison has infected the whole mass of 

 blood, or within about forty to sixty hours after its entrance 

 into the system. Two days after the perceptible rise in tempera- 

 ture has begun, an eruption on the mucous membrane of the 

 mouth is seen; almost simultaneously with this appearance of 

 the mouth, the mucous membrane of the vagina of the cow is 

 peculiarly affected. It is stated that one or the other of these 

 signs is rarely absent. On the day following the eruption in the 

 mouth, or about seventy-two 'hours after the first elevation of 

 temperature, the animal may be dbserved to have less appetite 

 than usual, and to ruminate irregularly. On the following day, 

 the fourth from the first rise of temperature, the animal for the 

 first time shows marked symptoms of illness. Death usually 

 occurs on the seventh day from the first perceptible elevation of 

 temperature. 



Dr. Jessen says: ''The appearances observed by me on the 

 mucous membrane of the mouth, both in the natural and inocu- 

 lated disease, are as follows: In some cases small round nodules, 

 seldom larger than a millet seed, are observed, which are still 

 covered with epithelium, through which a yellowish or yellowish- 

 gray material can be distinguished. A few hours later, some- 

 times not till twenty-four hours, the epithelium gives and the 

 contents become visible; hence results a suj^erficial lesion, which, 

 after the removal of the material lying upon it, is scarcely recog- 



