218 NAVIX ox THE HOESE. 



of the disease, it may have the effect of stopping its progress 

 and reducing the swelling. The following treatment has been 

 used with as much benefit as can be expected in this disease: 



Take— Tincture of iodine 2 ounces. 



Aqua ammonia 2 ounces. 



Powdered cantharides ^ ounce. 



Oil of spike 1 ounce. 



Oil of hemlock , 1 ounce. 



Mis well, to form a liniment. Apply with the hand, rubbing well, every 

 other day, until the cure is effected. Shake the bottle well before using the 

 medicine. 



The next prescription is more active: 



Take— Corrosive sublimate 2 drams. 



Crude mercury 1 dram. 



Lard 4 ounces, 



Mix, and rub well together, to form an ointment. Rub the lump with it 

 every third day until it is cured. 



BONE-SPAVIN. 



A deposit of bone on the inside, and at the lower part of 

 the hough, about the union of the cannon-bone with the small 

 or w^edge-bones of the hough, forming a tumor of greater or 

 less size, constitutes what is generally known as bone-spavin. 

 It produces complete stiffness of the bones between which it 



occurs. 



Spiijjtoms. — Many of the earlier symptoms of bone-spavin 

 may entirely elude detection, and the affection, consequently, 

 not be observed until it has progressed to a serious extent. 

 In order to give a complete explanation of the affection, it 

 will be well to recur to the bony structure of the hough. Ex- 

 amining the hough from above, we have the lower head or end 

 of the thigh-bone marked by three ridges and two grooves, 

 from before backward, and resting on a peculiar shaped bone, 

 called the astragalus, which is marked by two high, curved 



