Roth says that children of about seven years of age leave their parents' camp and go to stay with their grandparents.[814] We are not informed whether there exists a bachelors' camp in the North-West Central Queensland tribes; but this statement does not deny it, for boys are apparently not at once initiated after leaving their parental camp. Another statement of the same author about the natives of Koombana Bay (Queensland), affirms it explicitly: "The younger single males at a certain stage (puberty and onwards) always had a fire to themselves."[815] And again: "The grown-up lads sleep together, apart from the others."[816] [814] _Eth. Stud._, p. 183. [815] _Proc. R.S.Q._, p. 48. [816] _Ibid._, p. 51. Grey says that strangers visiting a tribe, if unmarried or without their wives, "sleep at the fire of the young men."[817] [817] Grey, ii. p. 252. Bishop Salvado, according to whose information the South-West Australian natives live in small tribes of six to nine persons, says that when a family disposes itself to sleep "les garçons qui out passé l'âge de sept ans dorment seuls autour du feu commun."[818] [818] p. 280. It is stated in two statements above (Dawson and Schultze), that there were camps of unmarried females as well as of single men. We may add here two other statements about such camps.[819] In the Maryborough tribes there were camps of unmarried girls, in connection with which there was some sexual licence. Similarly in the North-West Central Queensland tribes,[820] studied by Roth, single girls lived in groups, under the control of an old man. Such phenomena would account for the licence of unmarried females, which we find sometimes reported. But they do not seem to have a very large extension in the Australian aboriginal society. [819] Howitt, _Nat. Tr._, pp. 232, 233. [820] _N. Q. Eth. Bull._ 8, p. 6.