REPORTS OF OASES. 
167 
brought to the stable stands and rests, and the symptoms 
disappear; to reappear, however, upon the same exer¬ 
cise. As long as he is in the stable he shows no symp¬ 
toms, but when the circulation of the blood is increased 
by exercise, the spasm or cramp of the muscles and irritation 
again develop. The lameness resembles—and when first seen 
might easily be mistaken for—spavin, walking on the toe, as in 
hock lameness. The disease may also, sometimes, with 
hasty diagnosis, be mistaken and treated for azoturiaor colic ; 
but with such a history,—a patient showing these symptoms 
every time he is driven or exercised, and recovering after 
rest; the profuse perspiration and cold extremity—the veter¬ 
inarian will be led to suspect the real trouble, and the diag¬ 
nosis can now be easily confirmed by an examination per rec¬ 
tum. Inserting this hand into this organ, searching for these 
large blood vessels which will be found situated beneath 
about the last lumbar vertebra, we can feel the hard or 
cordy vessel, and the loss of pulsation or a fluttering sensation 
as of a small stream passing through a narrow space; the 
difference between that and the healthy artery will confirm 
our diagnosis. 
Treatment.— There is nothing 1 we know of that will avail 
in this trouble. Perhaps a mild case might be found where 
attempts may be made to cause absorption of the clot, assist¬ 
ing, perhaps, by medicinal agents, such as iodide of potas¬ 
sium, mercurials, or alkalies, or turning out to pasture, trust¬ 
ing to nature ; but I have not yet heard of any successful 
treatment. 
REPORTS OF CASES. 
TUBULAR PREGNANCY, AND GASTRO-HYSTEROTOMY. 
By W. M. Simpson, D.V.S., Greenfield, Mass. 
The patient was a twenty-two-months-old heifer, the prop¬ 
erty of Mr. George E. Lyons, which I was called to May 17th, 
1890. On seeing the animal, at once concluded she was 
in labor full term, and found the os and part of the uterus pro- 
