ON SOUNDNESS. 33 



for any use. Most horses, while suffering with thrush in 

 its mild form, work and travel well, but, as Mr. Youatt re- 

 marks, it is a disease, i. e., " inflammation of the lower 

 surface of the inner or sensible frog, and the secretion or 

 throwing out of pus, almost invariably accoaipanied by a 

 slight degree of tenderness of the frog itself, involving 

 separation of the horn from the parts beneath, and under- 

 running, ending in the production of fungus and canker, 

 and, ultimately, a diseased state of the foot, destructive of 

 the present, and dangerous to the future usefulness of the 

 animal." 



WIND GALLS are to be considered as unsounduess only 

 when they are very large and numerous, and the animal 

 lame thereby. 



WIND SUCKER is to be considered as uusounduess, as, 

 although but a vice at first, it becomes so natural to the 

 animal, that he will continue doing it, generally causing 

 indigestion, colic, and tending to lower his condition. 



Mr. Williams, from whom wo quote, says, that " a wind 

 sucker gathers air into his mouth and swallows it, blowing 

 himself out, sometimes to a tremendous size ; a wind suck- 

 er, being subject to colic and indigestion, must be consid- 

 ered as unsound." 



GREASE, MANGE, RUPTURES or HERNIA of all kinds, 

 ENLARGEMENT or SINEWS, ATROPHY of any muscle, dis- 

 eases of any of the internal viscera, lameness of all kinds 

 and degrees, are to be considered as unsoundness during 

 the time the animal is suffering from any of them. 



Those defects comprehended under the term BLEMISHES 

 are enumerated by Mr. Armatage as follows : 



"Scars, the effects of broken knees; capped hocks, 

 splints, bog-spavin and thoroughpiu, when they are very 

 slight ; loss of hair from blisters or from scars ; enlarge- 



