ANATOMY OF THE HORSE. 
269 
formed by the separation of the laminae composing the bone, and 
the addition of so many transverse long partitions or septa. The 
inferior border is thick, round, and smooth in early life; but, as 
age advances, grows thin, sharp, and irregular. 
The branches, the parts directed upwards, are broad, thin, 
and slightly curved; and offer for notice two surfaces, two borders, 
two processes, and a notch. The surfaces are generally smooth, 
though they exhibit marks of muscular attachment: the external 
one is clothed by the masseter; the internal, by the pterygoideus 
interims; the latter, also, is pierced a little behind the last molar 
tooth, by the posterior maxillary foramen, which forms the entrance 
to the dental canal, the anterior maxillary hole being its outlet. 
The borders: The posterior is broad, and roughened by the attach¬ 
ment of the stylo-maxillaris and masseter: the part where it 
makes its curvature to join the side is called the angle of the jaw% 
The anterior border is thin, and presents a sharp edge, turned 
inwards : it gives attachment to the buccinator and depressor labii 
inferioris. Processes: The posterior border is surmounted by the 
condyle, the transverse, cylindroid, smooth convexity which is 
received into the glenoid cavity in the temporal bone. The ante¬ 
rior border ends in the coronoid process, w^hich is flattened on its 
sides, has sharpened edges, and is slightly curved backwards: 
into it is implanted the temporal muscle. Between the two pro¬ 
cesses is the corono-condyloid notch, which furnishes room for the 
motion of the jaw, as also for the insertion of the temporal muscle. 
CTommunicattong anil ©aisitjf. 
Quidqiiid a^unt Veterinarii 
-iiostri est farrago libelli. 
ON COMPARATIVE ANATOMY. 
To the Editor of The Veterinarian, 
Dear Sir, 
IT gives me much pleasure to perceive your valuable publication 
made the vehicle for the dissemination of useful inforaiation, as 
connected with the treatment of disease afflicting the inferior’ 
orders of animals. I therefore request a corner in an early 
number, for the insertion of this note; and wish to direct the 
