274 
COLEMAN NOCKOLDS. 
The point of the swelling is hot and tender, and in a few days 
the tumor breaks and discharges a yellowish pus, streaked with 
blood. If left alone the inflammatory process works along the 
coronary band towards the front part of the foot, as is shown by 
the progressive swellings and discharging, until the whole 
length of the coronet is affected and perforated from heel to 
heel. Usually after the abscess bursts the animal is not as lame 
as during the forming of same. Not only does the disease attack 
the superficial structures, but there are sinuses formed, which 
penetrate the deeper parts of the foot, behind the lateral cartil¬ 
age into the fatty cushion, deep down between the horny wall 
and coffin bone, attacking the sensitive laminae ; finally the 
joints become attacked, the capsular membranes, bursae, and 
even the articulations, and often there occurs separation of the 
horny box from the foot. In severe cases constitutional disturb¬ 
ances occur, which result in fever, anorexia, and emaciation. 
About eighty cases came under my observation during the 
outbreak in Michigan, and the majority were sent to the glue 
factory. Of four that were operated upon three made good re¬ 
coveries and one was destroyed. 
Case /.—A standard-bred mare, used by a physician to make 
professional calls about city. Liveryman had been treating 
mare with poultices, caustics, etc., for about three weeks, when 
a veterinarian showed up who guaranteed to cure the foot in a 
month at a certain figure, and animal was taken to his hospital. 
At the end of that month, the animal was examined by me and 
there were present on the inside quarter of the coronet of the near 
hind foot two openings about the size of quarters, from which was 
running a copious discharge of pus. The heel of the foot was 
much swollen, probing showing several sinuses running down 
towards the sole and one in towards the fatty cushion. These 
sinuses were freely incised and horse-hair setons were passed 
from one opening on coronary band to frog, and the other from 
coronet to about two-thirds the distance from coronet to ground 
surface of wall, coming out through a hole made through the 
horny wall, so as to establish free drainage. The wounds were 
