358 MANUAL OF MODERN FARRIERY 



worn to be of use. But the continual use of It is apt 

 to produce irritation In the trachea, and this will 

 terminate in the affection termed roaring, which we 

 have particularly described at page 42. A five or six 

 months' run In a field has also been tried without 

 proving a remedy. Crib-biters are generally in low 

 condition. 



A muzzle barred across the bottom will prevent 

 crib biting. This must be made only of sufficient 

 width to allow full action to the lips, so that the animal 

 may pull his hay from the rack and eat his corn, but 

 so close as not to admit of him grasping the edge of 

 the manger. Crib-biting is legally considered un- 

 soundness. 



WIND-SUCKING. 



This is so intimately connected with crib-biting 

 that it may properly be considered a modification of 

 it ; as it is accompanied by a want of condition, and 

 the same bending of the neck, with the head drawn 

 inward, is manifested, and the horse alternately opens 

 and closes his lips, and a sound is produced similar to 

 sucking air. The remedies attempted have been 

 tying up the head of the horse, except when feeding ; 

 and the application of a muzzle with sharp spikes 

 bending towards the neck, which will prick him when 

 drawing in his head. 



NOT LYING DOWN. 



Horses are sometimes prone to standing constantly ; 

 and some only lie down once in a fortnight, or even a 

 longer period. When this is the case, they are 

 generally liable to swellings in the limbs, and seldom 

 able to go through much work. Such horses should, 

 If possible, be put into a stable by themselves and left 



