360 CANKER. 
and rather more abundant, issues from that part. Likewise it frequently 
exudes from the commissures, which unite the horny sole to the frog. 
The horn, also, becomes not only disorganized, but more ragged than in 
thrush. It bulges out at first, and ultimately flakes off, exposing a sub- 
stance not much more resistant than orange-peel. The substance is horn 
in a fungoid state. Its fibers run from the center to the circumference ; 
and between the space of each fiber is lodged a clear liquid, which be- 
comes tainted and dark colored by mingling with the horn that it dissolves 
and corrupts. 
The fungus is secreted in quantity, and always is most abundant when 
located about the edge of the sole. Here the papille are largest, and 
THE PRIMARY ESTABLISHMENT OF CONFIRMED THE SECOND STAGE OF CANKER. 
CANKER. Showing the great abundance of fungoid horn 
The horn turned back, so as to display the altered secreted around the margin of the foot. No 
state of the frog, which indicates a severe attack notice is purposely taken of the frog in this 
of the disease. illustration. 
here the granulations attain their greatest magnitude. The unresistant 
horn of canker becomes somewhat hard upon the surface of the sole, and 
large flakes peel off. Cut into, it displays no sensation; and this is for- 
tunate, inasmuch as it considerably reduces the difficulties surrounding 
the treatment of a badly-cankered foot. 
Concerning treatment, when the disease is confined to one hind foot, 
or even affects both posterior feet, the case may be undertaken with some 
degree of confidence. When it has involved one or more of the fore 
feet, it is always difficult to eradicate ; and, in the majority of cases— 
being guided by the age of the animal—a cure had better not be 
attempted. 
When a horse is cankered all round, the disease is apt to seem capri- 
cious. It may be cured in three feet; but it will linger in the fourth, 
resisting art’s resources. Suddenly measures before tried in vain seem 
to be endowed with marvelous efficacy. The diseased member, which 
hitherto no treatment could touch, now heals as by its own accord. 
However, before we can express the full of our satisfaction, canker once 
