Among the Papuans of New Guinea and Torres Straits, although intercourse before marriage is free, it is by no means unbridled, nor is it carried to excess. There are many circumstances restraining intercourse. Thus, unmarried men must not indulge in it during October and November at Torres Straits. It is the general rule also that there should be no sexual intercourse during pregnancy, while a child is being suckled (which goes on for three or four years), or even until it can speak or walk.[207] In Astrolabe Bay, New Guinea, according to Vahness, a young couple must abstain from intercourse for several weeks after marriage, and to break this rule would be disgraceful.[208] As regards Australia, Brough Smyth wrote: "Promiscuous intercourse between the sexes is not practised by the aborigines, and their laws on the subject, particularly those of New South Wales, are very strict. When at camp all the young unmarried men are stationed by themselves at the extreme end, while the married men, each with his family, occupy the center. No conversation is allowed between the single men and the girls or the married women. Infractions of these laws were visited by punishment; ... five or six warriors threw from a comparatively short distance several spears at him [the offender]. The man was often severely wounded and sometimes killed."[209] This author mentions that a black woman has been known to kill a white man who attempted to have intercourse with her by force. Yet both sexes have occasional sexual intercourse from an early age. After marriage, in various parts of Australia, there are numerous restraints on intercourse, which is forbidden not merely during menstruation, but during the latter part of pregnancy and for one moon after childbirth.[210] Concerning the people of the Malay Peninsula, Hrolf Vaughan Stevens states: "The sexual impulse among the Belendas is only developed to a slight extent; they are not sensual, and the husband has intercourse with his wife not oftener than three times a month. The women also are not ardent.... The Orang Lâut are more sensual than the Dyaks, who are, however, more given to obscene jokes than their neighbors.... With the Belendas there is little or no love-play in sexual relations".[211] Skeat tells us also that among Malays in war-time strict chastity must be observed in a stockade, or the bullets of the garrison will lose their power.[212] It is a common notion that the negro and negroid races of Africa are peculiarly prone to sexual indulgence. This notion is not supported by those who have had the most intimate knowledge of these peoples. It probably gained currency in part owing to the open and expansive temperament of the negro, and in part owing to the extremely sexual character of many African orgies and festivals, though those might quite as legitimately be taken as evidence of difficulty in attaining sexual erethism.