214 
EXTRACTS FROM FOREIGN JOURNALS 
with a view, it is stated, to investigate all cases of pleuro-pneumo- 
nia in neat cattle, especially along the dividing line of the United 
States and Canada, and along the lines of transportation from all 
parts of the United Staies to the ports from which cattle are ex¬ 
ported, and perform other duties prescribed by the Secretary with 
reference to disease, in order that cattle shipped from the United 
States to foreign ports may be known and certified to be free 
therefrom. 
EXTRACTS FROM FOREIGN JOURNALS. 
DENTIGEROUS CYST IN A FILLY. 
Prof. Degive, in Brussels, reports an extremely rare and inter¬ 
esting case of a dentigerous cyst on the base of the ear of a 
filly: 
On June 5th, 1879, there was brought to the clinic, a two-year 
old filly, of the draught horse class, which had all the pathogno¬ 
mic symptoms of a fistulous ear due to a dentigerous cyst. On th e 
free margin at the base of the concha auris was a fistulous opening 
from which oozed a tenacious fluid, and under the skin could be 
felt a diffused, induruted bone-like enlargement. The animal 
was cast. The skin and periosteum were divided and the dental 
mass laid bare. The removal of the same by means of a gouge 
especially constructed for this purpose was not attended with 
much difficulty. At first a larger portion lying in a forward di¬ 
rection was successfully detached, and then a smaller, deeper 
seated, irregular mass was removed; the latter crumbled into 
fragments which had to be extricated one by one with a forceps. 
Both portions consisted of several incomplete imperfectly formed 
molar teeth. Upon examining the wound by introducing the 
finger, Degive felt at the bottom of the same a soft tissue which 
was easily displaced, but after removing the finger it readily re¬ 
ceded and projected over the margin of the bone. This soft tissue 
could have been nothing else than the exposed brain, and instead 
of the favorable prognosis that was previously declared, a trau- 
