204 
COM PAR ATI VE PATHOLOGY. 
26th . — Turned out to grass, brought up in June, and worked. 
In iVugust he had a slight epileptic fit, which did not prevent 
his working. 
March 1841. — He is in regular work, and has had no fit since. 
The obstinate constipation of the bowels, and the immediate re- 
lief given to the animal by profuse venesection, clearly shew a 
cerebral and nervous affection. I attended the pony, in 1838 and 
1839, for repeated attacks of ophthalmia, which terminated in 
cataract and partial blindness. An interval of twelve months 
elapses, and then comes a more dreadful disease, viz. the one 
I have recorded, which induces me to think that the epileptic 
fits were idiopathic. 
Convulsions of one Side of a sucking Colt. 
June 8th, 1840. — The subject in question was a foal four 
months old. I saw him this morning, and on inquiry I found 
that he has had diseased joints some time, from the effects of the 
complaint known by the name of Wood-evil. lie was lying down 
composedly. I forced him up, when the muscles inserted into the 
patella became contracted, drawn up in knots, and convulsed, from 
that bone being displaced by prior contractions of the muscles. 
Contractions and convulsions succeeded like-wild fire from 
the thigh to the head of the same side — in fact, all the muscles 
to the head, neck, ribs, back, haunch, and extremity, were 
cramped, drawn up in knots, and spasmodically affected. The 
muscles of the cheek were peculiarly affected. The mouth was 
drawn aside and opened, and could not be shut while the spasms 
continued. He staggered about for a few minutes, and then fell. 
The recumbent position gave him instantaneous relief. He has 
been subject to these spasms a few days. The stifle was simply 
blistered ; the fits gradually wore away, and in August he was 
quite well. 
COMPARATIVE PATHOLOGY, No. XXIII. 
Chimpanzees. 
By Mr. W. Youatt. 
Male Chimpanzee . 
September 6, 1841. — Not in quite so good spirits as his com- 
panions. Considerable discharge from the nostrils. Coughs. 
14 th . — Very little change. Cough continues. Discharge from 
nostrils less. 
