CHAPTER X!:. 

 DISEASES OF THE FEET — continued. 



DISEASES OF THE HORN-SECRETIKG STRUCTURES — VILLITIS — CARBUNCLI 



OF CORONARY EAND — FALSE-QUARTER SAND-CRACK HORN 



TUMOURS SEEDY-TOE CORNS THRUSH CANKER. 



DISEASES OF THE HORN-SECRETING STRUCT ITRES OF THE FEET. 



Lamixitis, if confined to the soft structures of the foot, might 

 with propriety be classified under this head ; but as it involves 

 the pedal bones as well vts the laminae, I have arranged it under 

 the first division. 



INFLAMMATION OF THE CORONARY SUBSTANCE — ^VILLITIS 

 (haycock) — CORONITIS. 



Seen in heavy cart-horses, and occasionally in better-bred 

 ones. Symptoms — harshness and-brittleness of the crust; loss 

 of toughness and pliability ; increased heat round the coronet 

 and upper part of the crust; often a fulness of the coronary 

 band, and tenderness on pressure ; a shuffling gait, if both fore 

 feet are affected ; the heels are first put to the ground ; but not' 

 to the same extent as in laminitis ; a desquamation, or a ten- 

 dency thereto, of the coronary substance, shown by a line of 

 separation between it and the crust ; diminished secretion of 

 horn ; and a peculiar striated or striped appearance of the crust, 

 well described by Haycock in his essay on " Villitis." The 

 peculiarity of gait is due to the animal trying to glide his feet 



alons the ground. The duration of this form of lameness is 



.... J 

 variable, but it generally lasts a few weeks. It is distinguish^ 



able from laminitis by the peculiar appearance of the crust, and|. 



the bulging round the coronet. 



Treatvicnt. — Eest or removal of ordinary shoes ; poultices to 



the feet for a few days, and the application of Mr. Broad's, 



