CHAPTER XI 



DISEASES DUE TO ANIMAL PARASITES 



Acariasis. — An increase in the leucocytes and in the number 

 and percentage of eosinophiles has been found in severe cases of 

 follicular and of sarcoptic mange in dogs and cats. The greatest 

 increase was in a cat affected with sarcoptic mange in which there 

 were 7020 (27%) eosinophiles per cmm. Welch found that the 

 greater the amount of itching and irritation the greater was the 

 eosinophilia. He states that the eosinophilia depends more upon 

 the intensity of the dermatitis than upon its extent. 



Table XLVI. — Severe Cases of Follicular Mange in Dogs (Welch) 



155 



