REPORTS OF CASES. 
359 
its expulsion again, and he (Mr. G.) said she would throw it out 
in a few days, and it is the stone you feel there.” 
Treatment .—I washed the parts all about the vulva, and I 
sponged out the vagina with a solution of creolin, for such was 
all I had with me. I now passed the knife into the vagina 
made an incision on its superior wall and soon had my hand in 
the uterus, where I found the stone, 2 pounds n ounces in 
weight, tightly wedged into the left horn of the uterus. I re¬ 
moved it and washed out the cavity with creolin, took two 
stitches 111 the wall of the vagina, and gave orders for subse¬ 
quent treatment. 
Result .—The cow was in heat last week, but I forbade her to 
be served for six weeks to come; she is repairing very quickly 
her flow of milk has returned and all hands, except Mr G are 
happy. ” 
IS THE MEDIASTINUM ALWAYS PERFORATE? 
Ky W. Lincoln Bell, D. V. S., Brooklyn, N. Y. 
A mare > s ’ lx y ea rs old, suffered from pleuro-pneumonia, 
which after ten days became complicated by effusion into the 
thoracic cavity. Paracentesis thoracis was performed upon the 
right side between the sixth and seventh ribs, an ordinary ster¬ 
ilized trocar and canula being employed, and eight gallons were 
removed. The patient became much better after this, and gave 
promise of an uncomplicated recovery for one week, when the 
temperature rose and the respirations became labored, with 
marked bronchial rales in the left lung. Thinking that the 
effusion had reformed, the right cavity was again entered, but 
with negative results, although it was thoroughly searched at 
various depths of insertions of the canula. Not satisfied, the 
trocar was plunged in at the very bottom of the cavity,' but 
without obtaining any fluid. The opinion was then advanced 
that the mare was affected with chronic interstitial pneumonia 
of the left lung, and an unfavorable prognosis given. After 
four days the respirations became so labored, and the physical 
symptoms on the left side so characteristic of hydrothorax that 
it was decided to aspirate that side, notwithstanding the popu¬ 
lar acceptance of the assertion that when an effusion occurs 
on one side it must of necessity flow into the opposite cavity 
through the natural openings in the mediastinum. The result 
of the tapping of the left cavity was seventeen quarts and an 
immediate improvement in the condition of the patient, which 
now gives promise of ultimate recovery. 
