294 
A. ZUNDEL. 
and claims to have witnessed the radical recovery of animals 
after the necrosis and sloughing of the ligament. 
If ossification of the cartilage is discovered during the ope¬ 
ration, the removal of all the unossilied portion is first proceeded 
with, in order to prevent a recurrence of the disease. The extir¬ 
pation of the osteo cartilaginous portion is then effected either 
with a small drawing knife, or the gouge, or the bone forceps. 
The removal is made as far as the ossification is found to be com¬ 
plete, the operator making sure that every portion of cartilage is 
thoroughly destroyed. If the ossification is but partial or irregu¬ 
lar, the surgeon must be guided by the condition of the parts. 
When the entire cartilage has undergone ossification, its suscepti¬ 
bility to caries has ceased. 
When caries of the os pedis exists, the part must be destroyed 
with the sage knife, the gouge, or the chisel, according to' the 
existing conditions. But in this case, portions of the reticular 
structure require removal, of which, however, as little as possi¬ 
ble should be destroyed. 
It ma} 7 happen that the portion of the coronary band covering 
the cartilage may be destroyed , either wholly or in part, either 
as an effect of the disease, or by accident during the operation. 
In the first case, if the entire band has been destroyed, there is 
nothing to be done. But in the other case, if any portions of it 
remain, care must be taken to insure their preservation, as they 
may supply the necessary elements for a new, healthy secretion 
of hoof, and the quarter may grow again, more solid and less de¬ 
formed. If the wound of the coronary band consists merely in 
a simple division of limited extent, the wisest course will be to 
attempt to obtain union by immediate adhesion, or first intention, 
by bringing the edges of the incision together and maintaining 
the contact by careful dressing. When the alteration of the 
reticulo.r tissue alone, is present, it is very essential to avoid the 
excision of the injured laminae. It is, in fact, the better course 
to avoid wholly the' use of sharp instruments, and to leave to the 
natural process of suppuration the removal of the disorganized 
parts. Kenault having observed how their removal interfered 
with the reparative process, has often left them undisturbed, 
