104 Proceedings of the Royal Society 
the chorion which occupied the non-gravid horn. The amnion 
was closely adherent to the greater part of the chorion in the 
gravid cornu ; but that portion of the chorion which was attached 
to the mucosa lining the lesser curvature of the cornu, and which 
lay opposite the abdominal aspect of the foetus, was in relation 
to the wall of the sac of the allantois. The allantois formed a 
large funnel-shaped bag at the place of bifurcation of the cord. 
It was prolonged along the concavity of the chorion to within 2 
inches of its free end in the gravid horn, and to within 9 inches of 
the free end of the prolongation of the chorion into the non-gravid 
horn. The length of the sac of the allantois was therefore much 
greater than that of the amnion, though its capacity was much 
less. The allantois was prolonged as a slender tubular urachus 
into the umbilical cord, which also contained two large arteries and 
two veins. The amnion investing the cord had numerous brownish 
corpuscles, resembling those I have described in Orca gladiator , 
projecting from it ; and similar corpuscles were scattered over that 
part of the amnion which was in apposition with the wall of the 
sac of the allantois, and a few were seen on the amnion beyond the 
border of the allantois. In addition to these brown corpuscles, 
numerous other bodies of a dull white appearance were found. 
Sometimes these were slender rods, from j^th to j^-th inch long, 
arranged end to end like the links of a chain, at other times they 
were globular, like minute shot. The rods were most numerous 
on the abdominal half of the cord, whilst the globules were most 
numerous at and near its bifurcation. The surface of the amnion 
adjacent to the cord had a few of these globules scattered over it. 
These white bodies were covered by the smooth amnion, which with 
a little care could be stripped off as a distinct pellucid membrane. 
They consisted of crowds of squamous epithelial cells, so that in 
structure they resembled the whitish bodies which are so 
abundantly developed in connection with the amnion of the cow. 
Between 3 and 4 inches of the abdominal end of the cord was 
covered with cuticle, which had the purplish-grey colour of the 
cuticular investment of the adjacent surface of the wall of the 
belly. 
The two uterine cornua became continuous with each other 
through the corpus uteri, and were partially separated by an 
