65 



antiiie aiul public supervision of the trentineut, at the expense of the 

 owner, even though it is undertaken by the State, are tleniaiuled for 

 tlie comi)Iete eradication of the disease. With such laws no one could 

 long- liarbor on his premises a disease which constantly threatens the 

 tlocks of his neighbors with destruction and their owners with financial 

 ruin. 



FOOT SCAB. 



Chorioptes communis, Verheyen, var. ovis. 



This variety of scab, which is due to Chorioptes communis, Verheyen, 

 var. ovis, is of rare occurrence. It lias been noticed and studied in Ger- 

 many by Ziiru. 



The seat of this disease is in the feet and limbs. The disease pro- 

 gresses very slowly from the feet, and little by little invades the upper 

 parts of the limbs and adjoining parts. It is not readily communicable 

 to other sheep and spreads slowly. 



In the beginning- this variety of scab is characterized by the redden- 

 ing, followed by an abundant scaling of the skin, and later by yellowish 

 white crusts. The animals stamp, scratch, and bite the parts, showing 

 an intense itching. As the disease progresses the crusts become thicker; 

 cracks may form in the folds of the pastern and the limbs become quite 

 unsightly. The parasites swarm beneath the crusts, and when found 

 form a certain symptom of the character of the disease. 



Foot-scab is not a serious malady, as it readily yields to treatment 

 and is of slow extension. Any of the remedies proposed for the treat- 

 ment of common scab may be used with good efiect. 

 23038 A p™-^5 



