Fruits of Philosophy: A Treatise on the Population Question

by Charles Knowlton

The skin which lines the internal surface of the external lips is folded in such manner as to form two flat bodies, the exterior edges of which are convex. They are called the nymphse. They extend downward, one on each side, from the clitoris to near the middle of the external orifice, somewhat diverging from each other. Their use is not very evident The orifice of the urethra (the canal, short in females, which leads to the bladder) is situated an inch or more farther inward than the clitoris, and is a little protuberant.

Passing by the external lips, the clitoris, the nymphse and the orifice of the urethra, we come to the membrane called the hymen. It is situated just at, or a trifle behind the orifice of the urethra. It is stretched across the passage, and were it a complete septum, it would close up the anterior extremity of that portion of the passage which is called the vagina. But the instances in which the septum or partition is complete are very rare, there being, in almost all cases, an aperture either in its center, or frequently in its anterior edge, giving the membrane the form of a crescent Through this aperture passes the menstrual fluid. Sometimes, however, this septum is complete, and the menstrual fluid is retained month after month, until appearances and symptoms much like those of pregnancy are produced, giving rise to perhaps unjust suspicions. Such cases require the simple operation of dividing the hymen. In many instances the hymen is very imperfect, insomuch that some have doubted whether it is to be found in the generality of virgins. Where it exists it is generally ruptured in the first intercourse of the sexes, and the female is said to lose her virginity. In some rare instances it is so very strong as not to be ruptured by such intercourse, and the nature of the difficulty not being understood, the husband has sued for a divorce. But everything may be put to rights by a slight surgical operation. The parts here described are among those called the external parts of generation.

The internal organs of generation consist in the female of the Vagina, the Uterus, the Ovaries and their appendages.

The Vagina is a membranous canal commencing at the hymen and extending to the uterus. It is a little curved, and extends backward and upward between the bladder, which lies before and above it, and that extreme portion of the bowels called the rectum, which lies behind it. The coat of membrane which lines the internal surface of the vagina forms a number of transverse ridges. These are to be found only in the lower or anterior half of the vagina, and they do not extend all round the vagina, but are situated on its anterior and posterior sides, while their lateral sides are smooth. I mention these ridges because a knowledge of them may lead to a more effectual use of one of the checks to be made known hereafter.

The uterus or womb is also situated between the bladder and the rectum, but above the vagina. Such is its shape that it has been compared to a pear with a long neck. There is, of course, considerable difference between the body and the neck, the first being twice as broad as the last. Each of these parts is somewhat flattened. In subjects of mature age, who have been pregnant, the whole of the uterus is about two inches and a half in length, and more than an inch and a half in breadth at the broadest part of the body. It is near an inch in thickness. The neck of the uterus is situated downward, and may be said to be inserted into the upper extremity of the vagina. It extends down into the vagina the better part of an inch. In the uterus is a cavity which approaches the triangular form, and from which a canal passes down through the neck of the uterus into the vagina. This cavity is so small that its sides are almost in contact So that the uterus is a thick, firm organ for so small a one. Comparing the cavity of the uterus to a triangle, we say the upper side or line of this triangle is transverse with respect to the body, and the other two lines pass downward and inward, so that they would form an angle below, did they not before they meet take a turn more directly downward to form the canal just mentioned. In each of the upper angles there is an orifice of such size as to admit of a hog's bristle. These little orifices are the mouths of two tubes, called the Fallopian tubes, of which more will be said presently. The canal which passes through the neck of the uterus, connecting the cavity of this organ with that of the vagina, is about a quarter of an inch in diameter. It is different from other ducts, for it seems to be a part of the cavity from which it extends, inasmuch as when the cavity of the uterus is enlarged in the progress of pregnancy, this canal is gradually converted into a part of that cavity.

The lower extremity of the neck of the uterus is irregularly convex and tumid. The orifice of the canal in it is oval, and so situated that it divides the convex surface of the lower extremity of the neck in two portions, which are called the lips of the uterus. The anterior is thicker than the posterior. The orifice itself is called os tincæ or os uteri, or in English, the mouth of the womb. When the parts are in a weak, relaxed state, the mouth or neck of the uterus is quite low, and in almost all oases it may be reached by a finger introduced into the vagina, especially by a second person, who carries the hand behind.

The Ovaries are two bodies of a flattened or oval form, one of which is situated on each side of the uterus at a little distance from it, and about as high up as where the uterus becomes narrow to form its neck. The longest diameter of the ovarium is about an inch. Each ovarium has a firm coat of membrane. In those who have not been pregnant, it contains from ten to twenty vesicles, which are little round bodies, formed of a delicate membrane, and filled with a transparent fluid. Some of these vesicles are situated so near the surface of the ovarium as to be prominent on its surface. They are of different sizes, the largest nearly a quarter of a inch in diameter.*

* The vesicles here mentioned are the so-called Graafian
vesicles, or ovisacs, each of which contains in its interior
a little ovum or egg. In the human female the ovum is
extremely minute, so as only to be visible with the aid of a
lens. The Graafian vesicles are not limited to a certain
small number, as was formerly thought, but continue to be
formed in the ovaries, and to discharge at intervals mature
ova during the whole of the fruitful period.—G. R.

In those in whom conception has ever taken place, some of these vesicles are removed, and in their place a cicatrix or scar is formed which continues through life. However, the number of cicatrices does not always correspond with the number of conceptions. They often exceed it, and are sometimes found where conception has not been known to take place. The Fallopian Tubes are two canals four or five inches in length, proceeding from the upper angles of the cavity of the uterus, in a transverse direction in respect to the body. Having so proceeded for some distance they turn downward toward the ovaries. At their commencement in the uterus they are very small, but they enlarge as much as they progress. The large ends, which hang loose, terminate in open mouths, the margins of which consist of fimbriated processes, and nearly touch the ovaria.

We are now prepared to treat of conception. Yet, as menstruation is closely connected with it, and as a knowledge of many things concerning menstruation may contribute much to the well-being of females, for whom this work is at least as much designed as for males, I shall first briefly treat of this subject.