INFECTIOUS DISEASES AND MICROBES, ETC. 206 



(b) From the diseased tissues and organs of man 

 and cow alike the same microbe can be separated, 

 and artificial subcultures be made from it. 



(c) These subcultures, no matter whether estab- 

 lished from man or cow, have the property, when 

 inoculated into calves, of producing in them every 

 manifestation of what is known as the Hendon 

 cow-disease, except the sores or ulcers on the teats 

 and udders no doubt for the reason that the milk 

 apparatus is not yet developed in calves. 



(d) Subcultures of the microbe made from human 

 scarlatina and inoculated into recently calved cows 

 produced in them, along with other manifestations 

 of the Hendon cow-disease, the characteristic ulcers 

 on the teats ulcers identical in character with 

 those observed at the Hendon farm. 



(e) The subcultures, established either from the 

 human or the cow disease, have an identical pro- 

 perty of producing in various rodents a disease 

 similar in its pathological manifestations to the 

 Hendon disease of cows and to scarlatina in the 

 human subject. 



(/) Calves fed on subcultures established from 

 human scarlatina obtain the Hendon disease. 



(g) Children fed on milk from cows suffering 

 from the Hendon disease obtain scarlatina. 



Bearing on the same subject, it may be mentioned 

 that in the parish of St. George's, London, five 

 persons were attacked with scarlatina on the same 

 day (in October 1886). They had used a cheap 

 brand of condensed milk ; and in this milk Dr. 

 Klein proved (both by cultivation and inoculation) 

 the presence of Micrococcus scarlatinas. 



