REPORTS OF CASES 
151 
POTT’S DISEASE IN THE HORSE. 
By Prof. J. E. Ryder, D.V. S. 
The above condition being - of very rare occurrence, and 
this case one in which the profession of both New York and 
Brooklyn have been interested, I submit to you a history of 
the case, together with the lesions found on post-mortem ex¬ 
amination. 
On January 23rd there came to the American Veterinary 
Hospital a brown gelding, four years of age, sixteen hands 
high and weighing about fourteen hundred pounds, the ani¬ 
mal being sent by a veterinarian of Brooklyn, with a request 
that a diagnosis be made. 
On examination the following symptoms were noted, viz.: 
Commencing at the third dorsal vertebra, and extending to 
the sarcum, the vertebral column was curved toward the off 
side at an angle of about 45 0 ; accompanying this curved 
condition there existed upon the off side a large and reg¬ 
ular enlargement, extending from the posterior border of the 
scapula to the external angle of ilium, and from the vertebra 
to the sterum. This enlargement did not give rise to any 
symptoms of pain or derangement of the general condition of 
the patient; at the same time the animal was continually 
affected with thumps, or a condition which resembled that 
disorder. 
On motion there was a slight dragging of the off hind extrem¬ 
ity. With the exception of the above symptoms and the pulse, 
which was slower than normal and irregular, the animal ap¬ 
peared to be in good health, respiration and temperature nor¬ 
mal, appetite good. No diagnosis was made at this time, the ani¬ 
mal being placed under observation, and the history of the case 
obtained through the kindness of Dr. Berns, which was as fol¬ 
lows, viz.: 
In June, 1891, the animal was examined for soundness by 
a veterinarian of Brooklyn, who declined to pass him on 
account of malformation of the hocks; aside from this condi¬ 
tion the animal appeared to be sound, and showed no signs 
or symptoms of his present condition. The animal was re- 
