TRANSVERSE DEVELOPMENT OF THE FCETUS OF THE MARE. 301 
stricted and opening abruptly downward and backward at 
anterior end without any semblance to the usual intra-vaginal- 
projecting os. The foetus could be plainly felt beneath the 
vagina and posteriorly to the opening into uterus. The foetus 
lay with its back resting against the pubis of the mare, and 
by passing the hand through the opening into uterus, then 
downwards and backwards the elbow of one fore leg could be 
touched with difficulty. 
After long and arduous effort, this fore leg was secured 
and brought into the passage. All efforts to • secure other 
limbs or parts of foetus either by raising abdomen by means 
of a sheet passed underneath and drawn up by means of pul¬ 
leys or by casting mare upon her back, proved unavailing and 
the mare was destroyed. 
An autopsy was held at once, showing a large, well-formed 
and matured foetus lying on the right side with dorsum 
against the pubis ol mare, the head in right uterine cornu, the 
hind legs in left cornu, the body occupying a thoroughly 
transverse position. The body of the foetus lay positively ta 
the uterine opening, one fore leg flexed at knee, the other 
(which we had secured) being drawn backwards over the 
neck of the foetus into the vagina. 
The two cornua, owing to peculiar development of foetus, 
instead of being practically parallel and corresponding in 
their longer axis, to that of the mare, were disposed opposite 
to each other in a transverse position. The vagina was much 
elongated and narrow, and its opening into uterus bore no 
resemblance to the ordinary os. The opening was abrupt 
downwards, the superior wall of vagina suddenly losing itself 
by turning abruptly downwards, where it was continuous 
with the perpendicular anterior uterine wall. The inferior 
wall of vagina terminated abruptly in a thin margin; what 
had previously been the inferior wall of uterus, being turned 
upwards and backwards against vagina, thus forming the 
superior uterine wall. 
From the position of the foetus in the uterus, and the equal 
development of the uterine cornua, this case must be con¬ 
sidered a bona fide transverse or bi-cornual foetal develop- 
