90 Mr. Duncan, quoted by Commander R. C. Mayne, _Four Years in British Columbia and Vancouver Island_ (London, 1862), pp. 284-288. The instrument which made the screeching sound was no doubt a bull-roarer, a flat piece of stick whirled at the end of a string so as to produce a droning or screaming note according to the speed of revolution. Such instruments are used by the Koskimo Indians of the same region at their cannibal and other rites. See Fr. Boas, “The Social Organization and the Secret Societies of the Kwakiutl Indians,” _Report of the U.S. National Museum for 1895_ (Washington, 1897), pp. 610, 611. M13 Religious societies of Cannibals and Dog-eaters among the Indians of British Columbia. Live goats rent in pieces and devoured by fanatics in Morocco. 91 Fr. Boas, _op. cit._ pp. 437-443, 527 _sq._, 536, 537 _sq._, 579, 664; _id._, in “Fifth Report on the North-western Tribes of Canada,” _Report of the British Association for 1889_, pp. 54-56 (separate reprint); _id._, in “Sixth Report on the North-western Tribes of Canada,” _Report of the British Association for 1890_, pp. 62, 65 _sq._ (separate reprint). As to the rules observed after the eating of human flesh, see _Taboo and the Perils of the Soul_, pp. 188-190. 92 Fr. Boas, “The Social Organization and the Secret Societies of the Kwakiutl Indians,” _Report of the U.S. National Museum for 1895_ (Washington, 1897), pp. 649 _sq._, 658 _sq._; _id._, in “Sixth Report on the North-western Tribes of Canada,” _Report of the British Association for 1890_, p. 51; (separate reprint); _id._, “Seventh Report on the North-western Tribes of Canada,” _Report of the British Association for 1891_, pp. 10 _sq._ (separate reprint); _id._, “Tenth Report on the North-western Tribes of Canada,” _Report of the British Association for 1895_, p. 58 (separate reprint). 93 G. M. Dawson, _Report on the Queen Charlotte Islands, 1878_ (Montreal, 1880), pp. 125 B, 128 B. 94 J. R. Swanton, _Contributions to the Ethnology of the Haida_ (Leyden and New York, 1905), pp. 156, 160 _sq._, 170 _sq._, 181 (_The Jesup North Pacific Expedition, Memoir of the American Museum of Natural History_). For details as to the practice of these savage rites among the Indian coast tribes of British Columbia, see my _Totemism and Exogamy_ (London, 1910), iii. pp. 501, 511 _sq._, 515 _sq._, 519, 521, 526, 535 _sq._, 537, 539 _sq._, 542 _sq._, 544, 545. 95 A. Leared, _Morocco and the Moors_ (London, 1876), pp. 267-269. Compare Budgett Meakin, _The Moors_ (London, 1902), pp. 331 _sq._ The same order of fanatics also exists and holds similar orgies in Algeria, especially at the town of Tlemcen. See E. Doutté, _Les Aïssâoua à Tlemcen_ (Châlons-sur-Marne, 1900), p. 13.