TRACHEOTOMY AND LARYNGEAL INJECTIONS. 
93 
finding- my supposition erroneous, I gained courage. At the 
same time the hemorrhage diminished and in one-half to 
three-quarters of a minute, ceased entirely, as did also the 
blowing and puffing. The canula was removed, the patient al¬ 
lowed to go to his stall, when he commenced eating hay. 
During a fit of coughing he expelled some blood clots, 
mixed with slime ; perhaps a false membrane. The owner 
informed me that on the same afternoon the horse had per¬ 
formed hard work, to which exertion I attributed the forma¬ 
tion of a hsematoma saccatum, which the instrument must 
have penetrated, producing the critical symptom alluded to 
above. Four days after he was at work again. 
Now, if the more popular operation, with excision of a 
suitable piece of the trachea, is resorted to, the reconvales¬ 
cence requires more time, and, as we all know, will not admit 
of a complete restoration, though it is seldom harmful. 
Should the nature of the case require an artificial opening 
for several weeks or longer, particularly if the animal is 
obliged to work, a tracheotomy tube of a later pattern, con¬ 
sisting of two parts, arranged and attached in such a manner 
as to attract but little attention, is preferable. 
Circumstances may compel us to deviate from the custom 
in the selection of a tube. Tumefaction of the neck at the 
outset, or the development of the same around the artificial 
opening, occasionally requires a change of the tube, in which 
case the operator must use his own judgment. 
Recently I was called upon to treat another horse, with 
roaring and difficult respiration. The driver told me that 
about two months previous the horse had a similiar attack 
of about thirtv minutes duration, since which time he evinced 
nothing wrong until now. As there was no swelling detect¬ 
able around the neck or maxillary region, but repeated con¬ 
vulsive coughing, sweating, and a frothy discharge from the 
nostrils, I presumed it must be “ Spasmus Glottidis,” an ail¬ 
ment known to me only through literature. Whether my 
diagnosis was correct or not, the symptoms indicated the 
operation, which was performed, giving relief to the horse 
and all interested. The Hayne trocar was again chosen, ex- 
