248 Proceedings of the Royal Physical Society. 
lobule had the structure of normal functional testis, and was quite discrete 
from the rest (Fig. 15). 
Pigment similar to that of the ovarian tissues was found within the 
kidney of each side. Pituitary and suprarenals normal in size and structure. 
Ciliated epithelium upon the peritoneum. Rut-muscle and bones of the 
fore-limbs as those of a normal male. 
CASE No. ye 
Hux.ey (2), (Fig. 16)—Rana temporaria. Adult, measuring 7:6. cm. from 
the symphysis menti to the symphysis pubis. Killed October. 
Non-pigmented finger-pads well defined ; fore-limbs massive; rut-muscle 
developet as in the male; humeri of the male pattern; skin of the back 
and flanks not warty. : 
The right gonad was an irregularly shaped testis measuring 11x9x 
5 mm., with uneven outlines and a scarred surface. 
The left gonad, measuring 10x5x5 mm., consisted of two sorts of 
tissue. The bulk of the gland was composed of testicular substance, the 
surface of which was divided into three unequal lobules by deep transverse 
grooves. The posterior lobule turned abruptly towards the dorsal body-wall. 
Along the outer border of this testis-portion of the gonad was a prominent 
crest of jet-black nodules of pathological ovarian tissue. The gonad was 
much deformed and twisted upon itself. : : 
Vasa efferentia of the usual male arrangement were present on both 
sides in connection with the inner borders of the gonads. Seminal vesicles 
were present, being small, fusiform, and non-pigmented; the left one 
slightly better developed than the right. The right Miillerian duct was 
only weakly developed, but was convoluted and had a well-defined and 
pigmented uterine segment. The left duct was well developed. No ova 
could be seen within these ducts. The uterine segments and seminal 
vesicles were bound together, and there were four openings into the cloaca. 
On section, the right gonad (Fie. 17) had the structure of ordinary 
spermatic tissue save that six ova were found, two actually within seminal 
tubules and the others between the tubules, at different points. At two 
other points localised masses of pigment, identical microscopically. with 
that of the normal ovary, were found between seminal tubules. The ova 
differed in character, some being quite normal, others being distinctly 
degenerate in appearance. The presence of an ovum within a seminal 
tubule was associated with deformity and degeneration of the compressed 
spermatozoa. 
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