VOL. LXXXV.] PHILOSOPHICAL TRANSACTIONS. 530 



a pr^putium. A little way farther on in the vagina are 2 orifices, which are the 

 openings of the ducts of Cooper's glands. The vagina itself is about an inch 

 and half in length, beyond which it is divided into 2 separate canals, and on the 

 ridge which lies between them opens the meatus urinarius leading to the urinary 

 bladder. These 1 canals are extremely narrow for about \ of an inch in length, 

 and their coats at this part very thick, but afterwards they become more dilated; 

 they diverge in their course, and pass upwards for nearly 4 inches in length; 

 they then bend towards each other, so as to terminate laterally in the 2 angles 

 of the fundus of the uterus, of which they appear to be a uniform continuation. 



The uterus itself is extremely thin and membranous in its coats, infundibular 

 in its shape, and situated in the middle space between these canals; it is largest 

 at its fundus, and becomes smaller and smaller towards the meatus urinarius* 

 where it terminates ; the uterus at that part in the virgin state being impervious. 

 The same internal membrane appears to be continued over the inner surface of 

 the uterus and lateral canals; it is thrown into several folds, forming longitudinal 

 projecting ridges; one of these constitutes a middle line, extending the whole 

 length of the uterus, and dividing it into 2 equal parts. 



The ovaria, as well as the fimbriae, both in appearance and situation, re- 

 semble those of other quadrupeds; the fallopian tubes follow nearly the same 

 course to the uterus, but a little way before they reach it they dilate considerably, 

 forming an oval cavity; the coats of this part are also much thicker than those 

 of the rest of the canal, and they are supplied with an unusual number of blood- 

 vessels, giving these cavities a glandular appearance. The fallopian tubes, after 

 having formed these oval enlargements, contract again, and pass perpendicularly 

 through the coats of the uterus at its fundus, and terminate in 2 projecting 

 orifices, one on each side of the ridge formed by a fold of the internal mem- 

 brane. In the impregnated state, these parts undergo a considerable change; in 

 one of the ovaria there is distinctly to be seen a corpus luteum; the ovaria 

 become more vascular, as well as the oval dilatations of the fallopian tubes, which 

 are also enlarged. 



The uterus, and 2 lateral canals, have their cavities very much increased in size, 

 but that of the uterus is the most enlarged: the communication between these 

 canals and the vagina is completely cut off, by the constricted parts close to the 

 vagina being filled with a thick inspissated mucus; and in this state of the parts 

 there is an orifice very distinctly to be seen, close to the meatus urinarius, large 

 enough to admit a hog's bristle, leading directly into the uterus, where in the 

 virgin state no such passage could be observed. The uterus and lateral canals 

 are uniformly distended with an animal gelly, somewhat resembling the white of 

 an egg; but the parts having been preserved in spirits during a long voyage, this 

 substance must have lost considerably of its natural appearance. In the cavity 



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