402 
ANATOMY OF THJE HORSE. 
Direction. Oblique, from before backwards, and from below 
upwards. 
Structure. —Fleshy. 
Use.—To draw down the side of the lip, and with it the nasal 
caitilage, and thereby have some effect in dilating the nostril. 
orbicularis oris. — Labialis. 
Situation. Within the border of the lips, of which it consti¬ 
tutes the principal thickness. 
Figure.—It forms two semi ovals, directed backwards, united 
at the commissures of the lips. 
Attachments .—To the glandular substance and skin of the 
lips, and more particularly at the commissures, where the fibres 
coming from both lips cross one another, and become confounded 
with those of other muscles inserted thereabouts. 
Delations. Externally, with the skin; internally, with adi- 
pose tissue, the labial glands, and the membrane of the mouth. 
Direction .—Semicircular in the horizontal direction. 
Structure. Consists of two bands of fleshy fibres, the upper 
one of which is broader, thicker, redder, and stronger, than the 
lower. ^ 
Use. -To approximate the lips and retain them in contact; also 
to assist in the dilatation of the nostrils. 
[To be continued.] 
©ommuntiattons ana &&m. 
Ars veterinaria post medicinam secunda est.— Vegetius. 
A CASE OF STRANGULATED INGUINAL HERNIA. 
By William Dick, Esq. Professor of the Edinburgh 
Veterinary School. 
ON the 14th of August a bay gelding was brought to me, at 
8 a.m., with symptoms of inflammation of the bowels. Pulse 86, 
and small; cold extremities, a slight cold perspiration on the sur¬ 
face of the body, and a swelling rather larger than a person’s fist 
in the right groin. Two days previous to this he had fallen while 
dragging a heavily laden cart, and was severely bruised, but did 
