ILLUSTRATED GUIDE. 215 



ing very troublesome to manage. It is a continuation of 

 the thrush between the horny tVog and the internal struc- 

 tures of the foot, causing separation between them. 

 Treatment : cut away all the horn which has been sepa- 

 rated from the soft structures of the foot, and apply the 

 following ointment: Take equal parts of pine tar and lard, 

 melt over a slow fire, and add suphuric acid very slowly 

 until ebullition ceases ; or use collodion, half an ounce ; 

 castor oil, one ounce ; mix and apply to the parts. The 

 foot must be protected from dirt by a bandage or a leath- 

 ern boot. 



SCRATCHES. 

 This disease is well known to all horsemen. Treatment : 

 Wash the parts well with castile soap and water, and 

 when dry apply once a day the collodion and castor oil 

 recommended in canker ; or use a saturated solution of 

 the bichloride of mercury once a week, but not oftener, 

 or mischief may arise in consequence of a too free use. 



GREASE HEELS. 



This is a white, offensive, greasy discharge from the 

 heels of the horse. The skin becomes hot, tender and 

 swollen ; the acrid character of the discharge often caus- 

 es large portions of the skin to slough away, leaving an 

 ugly sore behind. Treatment : open the bowels with the 

 following ball: Barbadoes aloes, 1 oz.; pulverized gentian 

 root, 2 dr.; pulverized ginger, 1 dr.; water sufficient to 

 make the ball. Wash. the parts well, and poultice for 

 two or three days with the following : Flax seed meal 

 mixed with a solution of 2 dr. sulphate of zinc to a pint 

 of water, after which keep clean and bathe frequently 

 with glycerine, or the solution of zinc, or a solution of the 

 chloride of lime may be used ; or the bichloride of mercu- 



