Sex efficiency through exercises : special physical culture for women / by Th. H. van de Velde ; [photos, by E. Steinemann].
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fairly closely to the fourth phase of Film 12. On the other hand, the attitudes of extension, both (a) quite horizontal and (b) suspensory (i.e., corresponding to the transition from the second to the third phase of Film 12), are very favourable to this modification. What of the medial attitude (most in use in Europe at the present time), i.e., the attitude in which the woman lies on her back with slightly parted limbs and with one knee slightly raised ? In this respect it is easier than flexing and less so than stretching. Special facilities for increasing the clitoridal share in coitus by means of increased pelvic inclination are given in the attitudes of equitation (man lying on his back, woman astride his loins) and the sedentary attitude face to face. This fifth attitude, in which the man is seated and the woman is supported across the man's thighs, facing him, is very propitious to the clitoris. The woman has considerable freedom of movement, and thus is able to dip her pelvis forward at will and maintain the greatest possible amount of close contact between glans clitoridis and phallus. Moreover, she is also able to direct the ejaculation—if she inclines well forward at the critical moment—towards the posterior vaginal wall, instead of into the portio vaginalis and os uteri: and this certainly diminishes the likelihood of impregnation. (The conditions and effects of this modification during sedentary coitus are shown clearly in the scale drawing reproduced on Plate V.) If impregnation is desired, the inclination of the pelvis should be decreased, so far as possible, at the moment of ejaculation. Then the phallus is no longer pressed downwards by the symphysis pubis, its axis corresponds with that of the vagina, a deep penetration results and the seminal fluid flows forth close to the os uteri, or even directly into this aperture. Pelvic inclination may be changed in the course of hori- zontal or recumbent coitus, and in the following manner: Let the woman lie quite flat on her back in the attitude of extension (II.), that is, with legs separated but not bent at all. This posture, in itself, increases pelvic inclination, and it can be further accentuated by drawing in the loins and hollowing the back just above the hips, so that symphysis pubis and clitoris are stretched as far as possible downwards. The