[20] Journal Anthropological Society, May, 1882.
[21] Wyman: Report Peabody Museum, 1874, p, 40.
[22] This skill was not always shown, for Dr. Topinard speaks of a femur found at Feigneux which had been so clumsily set that one part greatly overlapped the other.—Bul. Soc. Anth., p. 534.
[23] Bul. Soc. Anth., 1883, pp. 258–301; 1885, p. 412. Bul. Soc. Polymatique du Morbihan, 1883, p. 12.
[24] Nature, January 2, 1886.
[25] Bul. Soc. Anth. de Lyon, 1883–1884.
[26] Belucci: Congrès Préhistorique de Lisbonne, 1880, p. 471.
[27] “Uber trepanirte Schädel won Giebiechenstein” (Verh. der Berliner Gesellschaft für Anth., 1879, p. 64).
[28] Matériaux pour l’Histoire de l’Homme, Aout, 1886.
[29] American Ass., Detroit, 1875, Nashville, 1877; “Ancient Men of the Great Lakes” “Additional Facts Concerning Artificial Perforation of the Cranium in Ancient Mounds in Michigan.” See also on this question generally Fletcher “On Prehistoric Trepanning and Cranial Amulets,” Washington, 1882.