290 NAVICULAR-JOINT DISEASE. 



RECIPE (No. 59). 



Thrush Paste. 



Take — Alum ; 



Blue vitriol ; and 



White ditto, of each an ounce. 



Rub them to fine powder. Melt together two pounds of tar and 

 one of lard, and when they are getting cool stir in the powder. 



If the disease has spread so as to render a portion 

 of the frog- bare, some of the paste should be laid 

 on a piece of tow of a corresponding size, and placed 

 over the sore, and the whole covered with dry tow. 

 It occasionally may be necessary to touch the sore 

 part with the butyr of antimony. After cases of bad 

 thrush the horse should, provided the expense be not 

 objected to, be shod with leather soles, in order to 

 protect the frog from injury; and the foot should in 

 this affection be kept from moisture with almost the 

 same care as in canker. 



NAVICULAR-JOINT DISEASE. 



This is a very frequent cause of great and incurable 

 lameness ; but its nature and treatment was not, until 

 remarked on by Mr. Turner, at all understood. 



The manner of the insertion of the flexor tendon 

 into the sole of the coffin-bone ; and of the navicular 

 bone lying above the tendon, in order to prevent that 

 concussion which otherwise would take place, has 

 been already explained. 



The navicular bone was ordained to be in almost 

 constant motion ; to facilitate its movements a syno- 

 vial sac was given, which is constantly secreting 



