BOG-SPAVIN. 203 



and in a few days after he may be turned out to 

 grass, as before directed. 



BOG-SPAVIN. 



Tliis is a tumor which makes its appearance on 

 the inside of the hough, and gives way to the 

 pressure of the finger, but recovers its shape on the 

 removal of the latter; it is generally (though 

 falsely) called a blood spavin, from its causing a 

 distention of the vein. The bog-spavin arises 

 from a strain in the hock-joint, occasioned by hard 

 riding, drawing, leaping, &c. Sometimes young 

 horses will strain themselves by galloping about, 

 when in their pastures ; by which the capsular 

 ligament that surrounds the joint, and the mucous 

 bag, or cyst, becomes inflamed, and occasions this 

 disease. In this complaint the horse goes stiff, or 

 lame in the joint, when first contracted. It is 

 always attended with inflammation more or less, 

 which may be felt by applying the hand to the 

 part. Sometimes it is so considerable as to extend 

 all round the hock-joint, with violent pain and 

 swelling : in this case it must be fomented with 

 (No. 123, p. 161), and the mixed oils (No. 120, 

 p. 158) be rubbed on immediately after. Let 

 these be applied twice a day, until the inflamma- 

 tion and swelling subside ; but if the inflamed part 



