TRYPANOSOMIASIS 479 



African Horse Sickness. — Dr. Arnold Theiler finds as a result of his 

 observations that dogs are susceptible to African horse sickness and 

 further that the canine species constitutes a very important medium 

 through which horses can he infected with the disease. This statement 

 is combated by McFadyean who after a series of observations has 

 reached the conclusion that dogs positively resist inoculation and that 

 it is highly improbable that dogs act as a reservoir in propagating the 

 disease to the horse. 



