288 
SOCIETY MEETINGS. 
would consider it an iinsoundness ; when same is superficial, 
however, the horse may be considered sound. 
Toe-cracks may be considered under the same head as 
quarter-cracks, the difference being the cracks occurr at the 
toe. If same extend through the full length of the hoof, I 
would call it an unsoundness. 
Naviculararthritis is a disease of the navicular joint. 
Opinions differ some in regard to the point of origin, some 
place it in the perforans tendon, others on the gliding surface 
of the os navicular, and still others say positively it originates 
in the synovial bursae, but that matters but little and if the 
examining veterinarian’s diagnosis is correct he need not hesi¬ 
tate in pronouncing the animal unsound. 
Keratoma, also termed keratopholocele, develops generally 
on the inner and anterior extremity of the wall of the toe at 
the white line and may extend as high as the coronet, leaving 
a marked depression on the pedal bone. This is an unsound¬ 
ness. 
Contraction is a name applied when hoofs become narrow 
at the heels, and is often associated with thrush and navicular¬ 
arthritis. This is in my opinion an unsoundness. 
Seedy toe may be termed localized laminitis. The wall 
becomes detached from the sensitive lamina, leaving a cavity, 
where we find a mealy deposit. It may appear at the toe or the 
quarter. For slow work such a horse may be all right, but 
I would be inclined to pronounee him unsound. 
Corns are located at the bars or heels of the foot. If a 
bruise it is termed dry corn, if suppurating a suppurative 
corn, involving the sensitive lamina, mostly seen in the front 
feet. A suppurative corn is an unsoundness. 
Thrush is a disease confined to the commissure of the frog, 
mostly seen in hind feet. If seen in front feet look for some 
other disease. If front feet are affected I consider it an un¬ 
soundness, if hind feet, not. 
Laminitis, also known as founder, is inflammation of the 
sensitive lamina ; whether the disease is acute or chronic, 
animal should be pronounced unsound. 
Dropped sole generally occuring from the effects of laminitis, 
is a condition where the sole descends and part of the os pedis 
rotates downwards. Such an animal may perform slow work, 
but is unsound. 
Canker is a morbid growth affecting the sensitive sole, frog 
and walls. It is a chronic proliferation of the papillae of the 
