494 WEST OF SCOTLAND VETERINARY MEDICAL ASSOCIATION. 
to lie too long on one side. As soon as he shows an inclination to 
rise he should be carefully assisted in doing so, and led with 
supports to a cool and airy loose box. There is great danger of 
laniinitis setting in, in all these cases, within a few hours, and we 
always guard against it by applying cold poultices to the fore feet and 
directing cold water continuously to the fore legs. Even if laminitis 
should not set in, the case requires careful handling for some days. 
Strong irritative fever generally sets in, accompanied by symptoms 
of thoracic disease, which has to be met and treated accord- 
ingly. 
One attack of the disease renders the horse more liable to 
another, and that under less provocation ; the heart remains per¬ 
manently aftected ; he never stands work or even hot weather so 
well again, and becomes a less favorable case to treat under any 
circumstances. 
I have made post-mortem examinations of fatal cases; I 
have never found the brain visibly affected. Invariably, however, 
we find the whole muscular system has an unusual florid appear¬ 
ance, due to the presence of an undue amount of blood ; the lungs 
are generally somewhat congested, but not engorged, and the respi¬ 
ratory passages leading from them filled with air and mucus. 
The heart is invariably of a soft character, the right auricle 
and ventricle empty, the left filled with yellow and red clot, and its 
outer walls covered with patches of ecchymosis. 
I do not think it necessary to say anything about pulmonary 
apoplexy; it is the same disease as that designated congestion of 
the lungs here. It occurs with us chiefly during the hot weather 
and under the same conditions as with you here. I will, therefore, 
at once pass to the consideration of what we term heat exhaustion. 
This disease may and does affect all classes of horses. It does not, 
however, often materially affect any horse indigenous to the country 
except under very trying circumstances. We find it chiefly affecting 
the imported horse and the Arab, perhaps old and with a partially 
broken-down constitution. Among imported horses we find that 
large-bodied, under-bred horses, heavy on their legs and with little 
or no character, are most liable to it. It is rare that we find it 
affecting a well-bred and what we call a compact wiry horse in 
ordinary heart and condition. Those horses that have had coup de 
soleily even in the mildest degree, are specially liable to it. It is 
not a disease of fast work, as it frequently happens to carriage- 
horses doing perhaps only two hours’ gentle work in the evening. 
This is, no doubt, associated with close and low-roofed stabling. 
It is most common towards the middle and end of the rainy 
season, and appears to be the result of the muscular tone and energy 
of the system giving way under the enervating effects of our lono- 
and trying hot weather. 
It is not by any means a fatal disease, but it incapacitates the 
animal for any kind of active work ; it recurs on the slightest pro¬ 
vocation and only really yields to treatment on the approach of the 
cold season. The symptoms are languor, loss of tone in the 
