208 
FRACTURE OF TIIE TRACHEA. 
polypus in animals. Repeated observations on other sub- 
jects in pathological anatomy have forced on my convic- 
tion, that as the same laws govern the animal organization, 
from the highest vertebrata to the lowest radiata, so, 
seemingly, there are fixed laws obeyed in the origin and 
development of most morbid products, whether in the bi- 
manous, quadrupedous, or other orders of the encephalated 
sub-kingdom. 
I shall detain the reader a few minutes longer to make 
a few remarks on the symptoms of nasal polypus. They have 
been abundantly described in Mr. Dickinson’s and other cases 
in my historical comment. Mr. Yarnell has shown that 
our eyes should be used as well as our fingers and probes, 
to ascertain the existence of these out- growths. In man a 
speculum nasi is used, and though veterinary surgeons 
cannot so readily employ this useful instrument, nevertheless 
there is a very ingenious contrivance which I have seen 
adopted by Professor Hering, in Stuttgart, in all cases of 
disease of the nose, and especially in glanders. The Professor 
has the horse’s head placed against the sun’s rays, while he 
stands opposite with a reflecting lens in his hand. The 
light is thus reflected upon the turbinated bones, and a much 
better vie^v is thereby obtained of the pituitary membrane in 
upper parts of the nasal cavity. 
[To be continued .) 
FRACTURE OF THE TRACHEA. 
By T. Orme Dudfield, M.R.C.Y.S., Cheltenham. 
The subject of this accident was a seven years old mare in 
fine condition, a clever, well-bred Irish hunter, the property 
of Edward Griffiths, Esq., Marie Hill, near this town. 
History . — Dec. 15 , 1854 . Returning after a severe day’s 
w r ork, when within twelve or fifteen miles of home, she came 
in collision with a cart, which was obscured by the darkness 
of the evening. Violent as was the shock, she did not 
fall, but, after a momentary pause, proceeded on at the same 
pace as before — about six miles per hour — ce breathing like a 
rank roarer.” The blow was sustained by the windpipe 
towards the lower part of the neck, inclining to the right 
side. 
Upon her arrival at home, indications of nervous depression 
were observed, accompanied by an emphysematous swelling, 
