492 
REPORTS OF CASES. 
stomach and intestines as far as possible, there was found a 
hard, tumorous mass of fibrous tissue at the connection of the 
mesentery with the superior abdominal wall, the posterior 
vena cava passing through it about the center ; after careful 
dissection this tumor, including the mesentery and posterior 
vena cava for about eight inches in length, weighed ten and 
three-fourths pounds. Desirous to know what could have 
caused this condition, I dissected it through its center, and 
to my great surprise discovered a smaller tumor weighing 
one pound and two ounces, conical in shape, its apex being 
anterior, the base posterior, located inside the vena cava, and 
loosely attached by its base to the inner wall of the vein. 
In order to admit the tumor and allow the passage of blood, 
the coats of the vein were ruptured and greatly distended, 
so large that it would admit one’s closed hand. The small 
tumor presented a degenerative appearance, as did the coats 
of the vein at this part. I think that from this condition the 
coats of the vein were so weakened that they gave way, 
causing a complete rupture slightly posterior to the tumor, 
whence the hemorrhage with the results above mentioned. 
COMMINUTED FRACTURE OF THE OS MAGNUM AND TRAPEZOID. 
By R. H. Harrison, D.V.S., Atchison, Kansas. 
I send you by express to-day, prepaid, a specimen of a 
carpus, with the following history: 
Subject .—Roan mare one foot two hands, eighteen years 
old. 
History .—Had been unshod for several years. On the 13th 
Sept., ’93, broke out of box stall, and in running on turf 
slipped, and pulled up lame on three legs. Called immedi¬ 
ately by owner, J. V. Bryning, M.D., and found condition, 
viz : not able to bear weight on the off fore extremity, limb 
in position of abduction and extension, with toe resting on 
ground ; crepitus at inside of carpal joint, and a swelling the 
size of a hazel nut, not particularly tender to pressure, manip¬ 
ulation or pressure not very painful; diagnosis made of 
