DISEASES OF THE OX AND SHEEP. 345 



over to Dr. Klein for purposes of research at the Brown 

 Institution. 



Dr. Klein proved that micro-organisms existed in the fluid of 

 the vesicles, and that these micrococci could be readily cultivated 

 and grew abundantly in milk; that the disease imparted by the 

 inoculation of calves with the virus presents symptoms very like 

 those exhibited by the cow from which these micrococci were 

 taken, symptoms, moreover, very similar to those of human 

 scarlatina, and accompanied by similar pathological changes in 

 the kidneys and other internal organs. He, moreover, also found 

 that these micro-organisms were, in all essential respects, similar 

 to those which he obtained from the blood of human beings 

 affected with scarlatina. 



With this short resume of the leading facts, we now proceed 

 to deal with this question more fully. It appears, then, that, 

 as well as Mr. VV. H. Power and Dr. Klein, Dr. Cameron also 

 was concerned, though in a less degree, in the investigation of this 

 disease which occurred in milch-cows at Hendon, and gave rise 

 to scarlatina in persons using the milk supplied from that 

 dairy. 



Now, this Hendon cow disease presents some points in 

 common with a malady of cows called erythema mammillarum, 



^ 



Fig. 40. — Milk or Teat-Syphok. 



This milk-syphon is constructed for the purpose of abstracting milk from the 

 teats of a co"w. 



or sore teats. As in the case of the Hendon disease, so also 

 in that of this latter malady, cows which have recently calved 

 are those affected, and the ulcers on the teats and udder may 

 in both diseases assume a very sluggish character. The 

 disorder varies in intensity, sometimes affecting the gland 

 tissue itself. The calf should be removed aud fed by hand, 

 and the milk should be drawn off daily by the aid of a milk- 

 syphon, and, of course, rejected. 



The attendance of the veterinary surgeon should be sought, 

 and he may probably administer in the first instance one pound 

 of Epsom salts, at the same time prescribing or supplying a 



