PHRKNITIS IN CATTLE. 
125 
hellebore acts at all as a sedative, it is by promoting a somewhat 
unusual determination of blood to the brain, and thus causing a 
diminution of nervous agency. This may be excusable or even 
beneficial in pneumonia ; but we have here too much determina¬ 
tion of blood to the brain already. 
We must not be solicitous about feeding in this complaint; 
no attempt should be made to coax the horse to eat: and even 
when appetite returns with the abatement of the inflammation, 
we must be exceedingly cautious with respect to both the quan¬ 
tity and the quality of the food. 
Prognosis .—In such a case our prognosis must be very guard¬ 
edly formed. No opinion should be given until some hours have 
passed after the first bleeding. If the pulse then becomes deve¬ 
loped and soft, a germ of hope may be encouraged. If after the 
furious state has commenced, and before the strength of the 
horse is exhausted, the violence should abate, and the animal 
become conscious of surrounding objects, and less irritable, these 
may be regarded as favourable circumstances ; but if the delirium 
remains unabated after copious depletion has taken place, little 
hope can be encouraged. 
Phrenitis in Cattle. 
The Frenzy or Sough in cattle is too well known to the farmer 
and the practitioner. There are generally at first much oppres¬ 
sion and heaviness; the animal can scarcely be induced to move; 
the eyes protrude and are red ; the respiration is hurried, and 
delirium more or less intense rapidly succeeds. The beast rushes 
at every thing in its way—it mischievously selects its objects—it 
is in incessant action, galloping about with its tail arched—stag¬ 
gering—falling—bellowing hideously—its skin sticking to its 
ribs, and the sensibility of the spine exceedingly increased. 
There is, even in health, a peculiar formation of the eye, or a 
sensibility of the retina to certain colours, which makes the beast 
dislike a brilliant red : under this disease it excites him to the 
highest pitch of fury. 
If, however, the previous oppression and stupidity are much 
less in the ox than in the horse, so is the succeeding violence in¬ 
creased ; not even a rabid ox is a more fearful animal; and it is 
somewhat difficult to distincruish between the two diseases. 
There will probably be some history of a previous bite belonging 
to the rabid ox; and in the early stage, although there may be 
lowness or oppression, there is nothing like apoplexy or want of 
consciousness. Beside, with greater fury there is more method 
in the madness of the rabid than the j)hrenitic ox. The latter 
