276 OPERATIONS ON BONES. 



likely to terminate either by resolution or even suppuration, though 

 in a few cases it may be followed by gangrene. 



(c) Gangrene, which generally manifests itself toward the 

 eighth or tenth day, ordinarily ends in death, and is often accom- 

 panied by an attack of ophthalmia more or less violent. 



(d) Incomplete cicatrization of the stump, occurring principally 

 in cases ia which the wound has been neglected, and suffered to 

 remain too long unprotected by a dressing, and when the mucous 

 membrane of the horn has become the seat of chronic inflamma- 

 tion. A central fistula usually results, accompanied by an abun- 

 dant suppuration, which is apt to prove exceedingly intractable to 

 treatment. 



2d. In many young ruminants this operation is performed on 

 calves two or three months old, and consists in removing the rudi- 

 mentary horns. For this Charlier has invented a peculiar tre- 

 phine kind of circular gouge, which is used as follows : The ani- 



FiG. 290.— Charlier'8 Method of Amputation of Horns in a Calf. 1st Step. 



mal beiag thrown and held by two assistants, the hair is cut short 

 around the base of the horns, and the trephine apphed over the 

 horns in such a manner as to divide the skin and subjacent tissues 

 down to the frontal bone where they are isolated by a circular in- 

 cision. Then by a downward and horizontal twist of the trephine 

 the divided structures are gouged out and the secreting matrix of 



