FRACTURE OF THE MAXILLARY BONE. 
119 
of tumour ; since the beards of the barley, of which there were 
always more or less, were worked deeper and deeper into the 
wound by every natural and indispensable movement of the parts 
in the act of mastication, and were ready to penetrate the cheek, 
and work their way out on the other side. Y. 
FRACTURE OF THE RIGHT BRANCH OF THE MAXILLARY 
BONE, ON A LEVEL WITH THE LAST BACK MOLAR. 
By M. U. Leblanc. 
T KNOW not any fact analogous to this. All the published cases 
of fracture that l know were lesions of the continuity of the max- 
illary bone towards the extremity of that bone, especially towards 
the interdentary spaces, and towards the symphyses of these two 
branches. One can readily conceive, other things being out of 
the way, that those that are more fragile, on account of their con- 
formation and their position, should be much oftener exposed to 
fracture, whether direct or indirect, or as it may happen by chance. 
On the 22d of July 1843, an entire roan horse, ten years old, 
or near it, of an excellent constitution and belonging to an omnibus, 
received a violent blow from another horse on the lower jaw, on 
the left side, and at the inferior part of the maxillary tuberosity. 
I saw him on the following day. He could not open his mouth 
so as to masticate his food : he seized some with his lips, but let 
it drop immediately ; still he would not abandon his food, but 
sucked and swallowed as much as he could. There was slight 
tumefaction at the place where he received the blow, and a 
part of it was very tender to the touch. I remarked, also, a 
depression of considerable depth answering to the border of the 
maxillary bone near the passage of the glosso-facial vessels. I 
did not immediately make any attempt to assure myself that there 
was a fracture, in order to be convinced whether it was complete ; 
but it was important for me to assure myself that there was not in 
the mouth any cause to hinder the horse from eating and drinking, 
as sublingual abscess, or strange substances in the canals or salivary 
glands, &c. When, in endeavouring to open the mouth, I made the 
slightest effort to move the-jaw bones, the horse expressed the 
greatest pain. Without insisting long on this, I confined myself 
to introducing my fingers between the interdentary spaces ; I 
displaced the tongue a little — I explored sufficiently and completely 
the inferior portion of the face, and assured myself that the sublin- 
gual canal had nothing bad or dangerous, and that the bars were un- 
touched. I could not carry my examination farther : I was satisfied 
with the opinion, that the cause of the impossibility of moving the 
machine, and consequently of eating, was a lesion produced by a 
