AMERICAN VETERINARY COLLEGE HOSPITAL. 
473 
normal, the pulse stronger, the ejes clearer; in short, it would be 
difficult to recognize the patient as the same animal of the pre¬ 
vious day. This has also occurred in patients who contracted the 
disease in the iiospital; in one box they suffered from complete 
anorexia, but when removed to another the change seemed at 
once to show its beneficial effect. In the treatment of cases out¬ 
side, the same result was obtained, and it was especially noticeable 
that when a patient was removed from a cellar stall to one on the 
upper floor a perceptible change for the better was apparent; even 
while in a cellar stable if they were removed from a single stall 
and turned loose in a box. These facts, proven by repeated 
experiments, show that change of locality and good hygiene prove 
a valuable auxilliary in the treatment of this disease. Also, in 
diseases of the air passage in many cases when animals have been 
sent to us, often coming from stables where everything is kept 
scrupulously clean, the same change would be manifest, the 
patient at once beginning to eat, and thereby helping nature to 
tide over the attack. It would be well, therefore, to attend to 
these conditions and make them paramount. Medicinal treat¬ 
ment would have to be but slight, and our patients would get 
well more quickly, and leave our care in a much better condition 
to resume their work. 
SUPPURATIVE PERIOSTITIS. 
An interesting and unique pathological condition, which has 
not been described, as far as I know, in English or French veterin¬ 
ary literature, has occurred in a horse recently discharged. It 
arose as a complication of trephining the sinuses of the head. 
The complications and accidents spoken of in different works on 
surgery as a rule in this operation, arise from lack of skill on the 
part of the surgeon, also when the animal is improperly confined. 
The trephine which has been commonly used is of large diameter 
—of late it has been recommended to use as small an instrument 
as possible, one whose calibre will only admit a small rubber pipe 
for the purpose of irrigation, claiming that the repairing process 
