Light on my thesis is also shown by the converse: For instance, an interesting suggestion was made by a distinguished medical specialist as a result of his observation of two or three of his own patients, where the prospective mother had desired unions and the husband had denied them thinking it in her interest: the doctor observed that the children seemed to grow up restless and uncontrollable, with a marked tendency to self-abuse. To these two or three instances I have added some which have come under my own observation and, although as yet the evidence is insufficient to support a dogmatic attitude, I incline to think that not only the deprivation of the mother of proper union during pregnancy, but also the after effects of some years of the use of _coitus interruptus_ tends to have a similar effect upon later children. That is to say that mothers whose natural desire for union has been denied, and mothers who are congenitally frigid rather tend to produce children with unbalanced sex-feeling liable to yield to self-abuse. Immoderate and excessive desire for sex union during pregnancy so far as I am aware is rare, and where it occurs it should of course be treated as an abnormality. The mother of the higher type, such as I have indicated in the paragraphs above who does desire unions, will probably only require them infrequently during these months. It should be obvious, but as the general public often lacks a visualizing imagination, I ought to add, that for the proper consummation of the act of union, particularly during the later months of coming parenthood, the ordinary position with the man above the woman is not suitable and may be harmful. The pair should either lie side by side, or should lie so that they are almost at right angles to each other, so that there is no pressure upon the woman. Or the man should lie on his side behind the woman, which makes penetration easy and safe and free from pressure. I might point out here a fact which is of general importance in all true consummations of the sex union, and that is that all the preliminaries and even the final act of ejaculation itself do not constitute the whole of the truest union. A truth on which I lay great stress, although I have not yet dealt with it fully in any publications, is the fact that an _extremely_ important phase of each union is the close and prolonged contact after the culmination takes place. The benefit to both of the pair of remaining in the closest possible physical contact for as long a time as is possible after the crisis is almost incalculable.