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(2) Heckethorn, C. W. The Secret Societies of All Ages and Countries. A comprehensive account of upwards of one hundred and sixty secret organizations—religious, political, and social—from the most remote ages down to the present time. New ed., rev. and enl., 2 vols. London, 1897.

(3) Webster, Hutton. Primitive Secret Societies. A study in early politics and religion. New York, 1908.

(4) Schuster, G. Die geheimen Gesellschaften, Verbindungen und Orden. 2 vols. Leipzig, 1906.

(5) Boas, Franz. "The Social Organization and the Secret Societies of the Kwakiutl Indians," U.S. National Museum, Annual Report, 1895, pp. 311-738. Washington, 1897.

(6) Frobenius, L. "Die Masken und Geheimbünde Afrikas," Abhandlungen der Kaiserlichen Leopoldinisch-Carolinischen deutschen Akademie der Naturforscher, LXXIV, 1-278.

(7) Pfleiderer, Otto. Primitive Christianity, Its Writings and Teachings in Their Historical Connections. Vol. III, chap, i, "The Therapeutae and the Essenes," pp. 1-22. Translated from the German by W. Montgomery. New York, 1910.

(8) Jennings, Hargrave. The Rosicrucians, Their Rites and Mysteries. 3d rev. and enl. ed., 2 vols. London, 1887.

(9) Stillson, Henry L., and Klein, Henri F. Article on "The Masonic Fraternity," The Americana, XVIII, 383-89. [Bibliography.]

(10) Johnston, R. M. The Napoleonic Empire in Southern Italy and the Rise of the Secret Societies. Part II, "The Rise of the Secret Societies," Vol. II, pp. 3-139, 153-55; especially chap. ii, "Origin and Rites of the Carbonari," Vol. II, pp. 19-44. London, 1904. [Bibliography.]