The Ailments of Horses. 73 



Ringworm. — A skin disease, caused 

 by a vegetable parasite, of which there 

 are two species. 



The hair falls oti; leaving a circular 

 stubbly patch.* 



Treatment. — Wash and scrub the part 

 with soft soap and hot water. Now rub 

 in iodine ointment daily, or paint with 

 iodine tincture. 



Roaring. — This constitutes one of the 

 worst forms of unsoundness, and is a very 

 common disease. 



INIany handsome horses are perfect but 

 for this defect. This is the reason why 

 many hicrh-class horses are doing cab or 

 other menial work. 



Although usually said to be an hereditary 

 disease, it by no means follows that every 

 " roarer " has received such as an in- 

 heritance—in fact, this is an indisputable 

 truism. 



Hereditary roaring is, so far as we 

 know, incurable, the muscle of the larynx 

 (voice-box) having undergone fatty de- 

 generation through impaired nerve func- 

 tions. 



The muscular tissue is gradually re- 

 placed (destroyed) by fatty material. This 

 is, of course, quite useless for the func- 

 tions assigned to the replaced muscle. 

 Hence a portion of the larynx remain.s 

 paralytic, and it is this which interferes 

 with the air supply to the lungs. 



Whistling is a modification of roaring. 



Tumours in the nostril, larynx, disease 



* In the other variety a honeycomb appearance 

 is produced. 



