ACIINOMYCOSIS. 



425 



on a farm in Yates City, where there were 80 head of cattle, 

 111 were found to be suffering from actinoinycosis. Mr. Case well 



FIG. 180. Photograph of a steer nearly three years old, but about the size of a 

 y. -iii-ling. The emaciation and deplorable aspect recall the appearance of 

 " a piner "or " waster " (tuberculosis). 



reported that the disease was prevalent in nearly every county in 

 that State, and that in his opinion it was spreading. In one 

 instance 109 cases were slaughtered. 



Actinomycosis in Relation to Tuberculosis. When we consider 

 the very high percentage of cases 

 of tuberculosis which has been 

 reported in some localities, the im- 

 portance of differentiating actino- 

 inycosis from tuberculosis cannot 

 be over-estimated. The very 

 great contrast in the appearance 

 of the micro-organisms in the 

 two cases renders this a very 

 matter for the pathologist. 

 But practical veterinarians and 

 breeders of cattle are liable to 

 mistake some manifestations of 

 actinomycosis for tuberculosis. 



FIG. 181. ACTINOMYCOTIC NODULES 

 FROM THE PLEURA. 



It is of the greatest im- 

 1>. nance to bear in mind that 

 wens or elvers are really not tubercular, but actinomycotic ; and 



