282 PROFESSOR TURNER ON THE 

In the uterus of a Cystophora cristata, which died in the Zoological Gardens, 
London, May 19th, 1874, about three and a half months after the birth of a 
cub, and for which I am indebted to Dr Jonn ANDERSON, I was able to confirm 
the observations previously made on the uterus of H. gryphus. On the free 
surface of the mucosa was placed a layer of columnar epithelium, the cells of 
which were large and well formed. The mouths of the utricular glands were 
seen without difficulty opening on the summits and sides of the longitudinal 
folds of the mucous membrane ; their orifices were circular, closely set together, 
and each was surrounded by a capillary vascular ring (fig. 19). The free surface 
of the mucosa was studded with multitudes of minute orifices—the mouths of 
the glands, The glands were comparatively short both in H. gryphus and C. 
cristata, and the capillaries of the mucosa formed a closely-set network around 
them. The corpus luteum of C. cristata, was in the right ovary, which was not 
more than about half the size of the ovary of H. gryphus. 
The free surface of the non-gravid horn of the uterus of the pregnant ZH. 
gryphus possessed no longitudinal folds of its mucous membrane such as were 
observed in the non-gravid uteri of H. gryphus and C. cristata. The surface of 
its mucosa was to the naked eye almost perfectly smooth, but when examined 
with a simple lens, slight irregularities were seen, partly due to the presence of 
minute ridges with intervening depressions, and partly owing to a granulated 
condition of the membrane. When examined with higher powers of the 
microscope the tubular utricular glands were readily seen. They were more 
elongated, and less tortuous than in the unimpregnated uterus; the branches 
at their deeper ends were much more distinctly seen, and they were much less 
closely crowded together, owing to the increase in the amount of the inter- 
glandular connective tissue. The glandular epithelium was abundant, the cells 
being elongated, though I could not satisfactorily determine that they pos- 
sessed a precise columnar form. The granulated appearance of the mucosa 
seemed to some extent due to the presence of these glands in the mem- 
brane. 
The free surface of the mucous membrane of the non-placental area of 
the gravid horn of the same uterus was smooth in appearance, both to the 
naked eye and under a simple lens. With higher powers the tubular utricular 
glands were also seen without difficulty, but they were more elongated, so 
slightly tortuous as in many instances to be almost straight, and separated by 
greater intervals, occupied by the interglandular connective tissue, than in the 
non-gravid horn. In some of the glands the columnar form of the cells was 
distinctly recognised, and the almost circular form of the gland orifice on the 
free surface of the mucosa was in many preparations readily seen. The mucous 
membrane of the septum between the two horns was smooth on the aspect 
directed both to the gravid and non-gravid horn. The appearance and form of 


