Medical men have been called upon to extract a wide variety of objects from the vagina and urethra following masturbation or accident. Usually the woman knew that the object was inside her and requested medical assistance.

This, we may assume, is yet another one for a future Sex Olympics. Considering the amount of masturbation that goes on there must be considerable volume of semen discharged in the absence of a convenient vaginal receptacle. The distances the seminal fluid achieves before being arrested in flight must surely vary. I have seen very little documentation on this.

In Kinsey we find that extra-marital intercourse is most frequent in the 21-25 years age group i.e. a maximum frequency of about eighteen times a week. Homosexual activity, coitus with prostitutes, petting to climax, marital intercourse are also high for this group. Younger people seemingly do better at masturbation and nocturnal emissions.

Various extremely unusual masturbatory techniques have been used by both men and women to achieve orgasm, and, with men ejaculation.

It is a commonplace that fantasy accompanied by digital manipulation of the penis, can produce ejaculation in the majority of men. A small number, however, can accomplish ejaculation by means of fantasy alone.

Historically women have been seen as sexually rampant, as vamp and temptress or as sexually dead (the proper state for "moral" wives).

One index of sexual awareness and interest is the degree of masturbation in an individual (though of course masturbation may be infrequent or non-existent in highly sexed individuals when an adequacy of other outlets exists).

According to Kinsey, maximum masturbation rates were to be found in children under the age of fifteen. For this age group the maximum frequency of masturbation was in excess of twenty-three times a week.

Some females surveyed had experienced orgasm from this source as many as thirty or more times in a week. Some energetic females had masturbated to orgasm as many as one hundered times in a single hour! But some women only tried it once a month.

Kinsey concluded that "the range of variation in almost every type of sexual activity seems to be far greater among females."

Not many women fantasise about sexual contact with animals. In the Kinsey survey only one per cent of women masturbated while fantasising about animals. Four times as many as this had sadomasochistic fantasies during "self-stimulation."

Men and women will go to great lengths to give themselves sexual satisfaction. Sometimes the results are not what was hoped for.

One book mentions the case of a man who tried to masturbate by putting his penis into the sucking end of a vacuum-cleaner. The result was that all the skin was sucked off the penis.

This method of masturbation "is not therefore recommended." P. Mantegazza has instanced the case of a penis caught in a bayonet tube and in the bath tub faucet. Many similar such cases are known to doctors and diligent researchers.

There is copious evidence (much of it quoted by Kinsey) of children masturbating at all ages from a few months old onwards.

Kinsey mentions one record of a seven-month-old infant and records of five infants under one year of age who were observed in masturbation. Some of the cited evidence includes Townsend (five cases under one year of age); Talmey (one case of nine months); Spitz (rocking and genital play observed in over half of 248 children under one year of age), etc.

One of the curious things about sexual behaviour is that it correlates - in frequency, variety, etc. - with social class.

Kinsey found that masturbation was more common in educated classes than in those groups concerned with unskilled or manual labour. Of all classes the professional groups masturbate most.