162 THEUSH AND OANXEB. 



comes thin, shriveled, contracted, and fissured ; and 

 as the disease extends, the matter becomes still 

 more fetid, and may terminate in a yet more un- 

 manageable form of disease, namely, canker. In 

 Thrush the frog is painful when pressed upon by 

 the thumb or pincers, or when the animal treads 

 upon a stone. As a consequence of neglected 

 thrush, the horn may separate from the sensible 

 part of the foot, and unhealthy vegetations, proud- 

 flesh, fungous matter, spring up, occupying a portion 

 or the whole of the sole and frog, and finally involv- 

 ing frog, sole, and bars, in a mass of putrefaction, 

 constituting the worst form of canker. 



TREATMENT. As thrush is often caused by un- 

 cleanliness and constant moisture of the feet, the 

 greatest care must be taken to keep them dry and 

 clean, and especially from dung and urine. If con- 

 nected with contracted fore-feet, particular care 

 must be given to shoeing. 



The frog should be carefully pared down and all 

 loose, ragged portions removed in order to prevent 

 the accumulation of matter and dirt. The discharge 

 wiped off by means of tow pressed down into the 

 cleft with a thin piece of wood. Then smear the 

 frog and cleft with a mixture composed of half an 

 ounce of sulphate of copper, (blue vitriol), and six 

 ounces of tar made into a paste. A small piece of 

 tow dipped in this mixture should also be placed in 

 the cleft, or in whatever part of the frog a sinus, hole 

 or cleft exists. In bad cases repeat the dressing 

 daily ; in others, once in two or three days is suffi. 



