A very important and striking feature of ceremonial licence in general, is that the sexual intercourse, which takes place on that occasion, is not subject to class rules. We are indebted to Messrs. Spencer and Gillen for a very minute account of customary licence, which takes place as a rule during corroborees and other ceremonies. "In the Eastern and North-eastern parts of the Arunta, and in the Kaitish, Iliaura and Warramunga tribes, considerable licence is allowed on certain occasions, when a large number of men and women are gathered together to perform certain corroborees. When an important one of these is held, it occupies perhaps ten days or a fortnight, and during that time the men, and especially the elder ones, but by no means exclusively these, spend the day in camp preparing decorations to be used during the evening. Every day two or three women are told off to attend at the corroboree ground, and with the exception of men who stand in the relation to them of actual father, brother, or sons, they are, for the time being, common property to all the men present on the corroboree ground."[303] On all such occasions the class rules are disregarded, they are even broken, so to say, in the most radical way: a man may have, in connection with certain performances, access to his mother-in-law, who under normal conditions is most strictly tabooed to him.[304] And again, in the Warramunga tribe an example is quoted when a tribal father has access to his tribal daughter on ceremonial occasions.[305] This example refers to a case where the woman was offered by her husband as a kind of retribution for some services rendered in performance of ceremonial functions. In the same tribe there are other occasions (in connection with burial) on which a man is bound by custom to offer his wife to a man who was useful to him.[306] The class rule is disregarded in such cases, too. This holds good also in the case when a man receives this form of reward for having been useful to the community as a messenger.[307] When an armed avenging party is sent to carry out a sentence on some other local group, the latter may attempt to bribe the members of the avenging party by offering them some women. If these are accepted, the sentence is not carried out, and the avenging party returns peacefully home. Sexual intercourse under this condition is also not subject to the class rule.[308] It may be said, therefore, that on all occasions[309] when ceremonial licence takes place, the strict class exogamy does not hold good; whereas incest, as regards blood relationship, is always strictly forbidden. This refers both to the initiation rites and to ceremonial licence in the tribes described by Roth and by Spencer and Gillen. [303] Spencer and Gillen, _Nat. Tr._, pp. 96, 97. [304] See _ibid._, pp. 96-99 (for the Arunta tribe). [305] _Nor. Tr._, p. 138. [306] _Ibid._, p. 139. [307] _Ibid._ [308] _Ibid._, p. 140.