o62 The Farmer's Veterinary Adviser- 



ures, etc. Tliere is a puffy fluctuating swelling with heat 

 and tenderness on the antero-internal side of the upper 

 part of the joint, where in the natural state there is a hol- 

 low or depression. There is also a similar swelling behind 

 in the seat of thorough-pin but distinguishable in that it 

 cfin be pressed forward by compression, the anterior 

 swelling meanwhile filling up, but there results no swell- 

 ing below and behind the hock as in thorough-pin. The 

 lameness resembles that of hone spavin, but there is per- 

 haps more tendency to a jerking up of the limb. The 

 disease may go on to ulceration of the joint, to bony de- 

 posit, and even to anchylosis with aboHtion of all move- 

 ment. 



Treatment. Rest, and use a high-heeled shoe. In case 

 of very violent inflammation use soothing measures (fo- 

 mentation), and when extreme heat and tenderness have 

 subsided use blisters as for bone spavin, or still better, the 

 hot iron applied lightly at nearly a white heat. 



Open joint is to be treated here as elsewhere, an active 

 blister being often of great advantage in arresting move- 

 ment, closing the wound and abating inflammation. 



Bog spavin is most obstinate in old animals and in 

 rheumatic constitutions with cracking of the joints in 

 starting a walk. 



DBOPSY OF THE HOCK JOINT. BOG SPAVIN. 



An excessive secretion of joint-oil, from over-exertion, 

 or a dropsical effusion into the cavity of the joint pro- 

 duces a swelling having aU the characters described abovOj 

 but without heat, tenderness or lameness. It may some- 

 times be benefited by a blister or even by a bandage wet 

 with some strong astringent lotion, but as it is only a 

 blemish and does not interfere with the animal's useful- 

 ness it is best, as a rule, to let it alone. 



BLOOD SPAVIN. 



This is a dilatation of the vein which nins over the 



