DR. LEGEAR'S STOCK BOOK. 121 



Symptoms. While being driven, the animal suddenly stops, 

 elevates his head, staggers about from one side of the road to the 

 other, becomes unmanageable, and falls to the ground. After 

 lying down awhile, he gets up, stares about in a vacant manner, 

 -hakes himself, and apparently is all right. It is liable to come 

 on a horse that is subject to it at any time. 



Treatment. Give a good physic, and apply cold water to the 

 head. Also give 4 drams of bromide of potash to quiet the 

 nervous system. Some animals have but one attack, while others 

 are subject to it. 



STEINGHALT. 



Stringhalt is a violent spasmodic jerking, or an irregular move- 

 ment of one or both hind limbs, while the animal is in motion. 

 \ Cry rarely it may be found to affect one of the fore limbs. 



Causes. It is caused by some lesion or derangement of the 

 nervous system. What this derangement may be is no easy mat- 

 ter to determine. It is no doubt due to irregular distribution of 

 nervous influence to the muscles that bend and extend the limb 

 affected. This may be brought about by pressure on some part 

 of the nervous system, as from tumors, blood clots, etc. 



Symptoms. It is manifested by a sudden jerking up of one 

 or both hind legs when the animal is in motion. This symptom 

 may be very slight in some horses, but has a tendency to get 

 worse with the age of the animal. In some the jerking up of the 

 leg is very violent, the foot in some cases even striking the belly, 

 and when it is lowered to the ground the motion is equally sud- 

 den and forcible. It is a difficult disease to understand, and the 

 affection constitutes an unsoundness. Most cases develop gradu- 

 ally, but a case may develop in a very short time. 



