DISEASES OF THE BRAIN AND NERVOUS SYSTEM. 59 
iy 
A HORSE BENT ON MISCHIEF—THE SUBJECT OF PHRENITIB. 
shuse which produce disorder in the digestive function or organa. 
It is well known, however, that this, like some other diseases of 
the brain, is constantly occurring among members of the human 
family as well as the equine species, they being the subjects of 
constitutional defect in the form of scrofula. Derangement of the 
digestive organs almost always affect the brain, in eonsequence of 
sympathetic relations existing between the two. Hence, in view of 
preventing disease of the biain, we must keep the stomach in good 
working order, by means of an intelligent system of dietetics, and 
the exhibition of sanative medicines when they seem to be needed. 
Symptoms.—The observable symptoms of abscess within the brau 
do not differ materially from those which are present in dropey of 
the brain. In the early stage, the animal appears lethargic, sleepy. 
and, when urged to move, reels and comes near falling. The oead 
‘s usually somewhat depressed, yet it is often inclined to one side: 
the pupil of the eye is dilated, and the membranes of the lids are 
congested and reddened. As the disease advances, a state of torpor 
wets in. Blindness, from pressure on the brain, ensues; the animal 
gets upon the floor, soon abrades the skin from the regions of the 
hips and shoulders, until, as a matter of charity, the owner puta 
an end to the sufferings of the patient. 
