ACTINOMYCOSIS. 



425 



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

 IG wei'e fomid to be suffering from actinoDiyoosis. Mi'. C'asewell 



Fig. 180. — Photograph of a steer nearlj' thi-ee years old, but about the size of u. 

 yearling. The emaciation and deplorable aspect recall the appearance of 

 " a piner "or " waster " (tuberculo.sis). 



reported that the disease was prevalent in nearly every county in 

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

 in-stance 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- 

 mycosis 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 

 easy matter for the pathologist. 

 But practical veterinarians and 

 bi'eeders of cattle are liable to 

 mistake some manifestations of 

 actinomycosis for tuberculosis. 



It is of the greatest im- 

 portance to bear in mind that 

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



Fig. 



181. — Actinomycotic Nodules 



FKOM THE PlEUKA. 



