[252] C. W. King, “Antique Gems and Rings,” London, 1872, p. 399.

[253] Jules Labarte, “Dissertation sur l’abandon de la glyptique en Occident au Moyen Age et sur l’époque de la renaissance de cet art,” Paris, 1871, pp. 12–18.

[254] Labarte, “Inventaire du mobilier de Charles V,” Paris, 1879, p. 86, No. 555.

[255] Joannis Cantacuzeni, “Historiæ,” vol. i, lib. iii, cap. xlvii.

[256] Migne’s Patrologia Græca, vol. cliii, Paris, 1866.

[257] Emil Hannover in “Politikon” Kjobenhavn, April 10, 1911.

[258] C. Drury Fortnum, “Notes On Some of the Antique and Renaissance Gems and Jewels in Her Majesty’s Collection at Windsor Castle,” London, 1876, pp. 12, 13; cut double linear size on p. 13.

[259] Ibid., p. 15.

[260] O. M. Dalton, “Franks Bequest, Catalogue of the Finger Rings, Early Christian, Byzantine, Teutonic, Mediæval and Later (British Museum),” London, 1912, p. xxxi.

[261] “Catalogue of the Special Exhibition of Works of Art at the South Kensington Museum, June, 1862,” section 32, “Rings,” by Edmund Waterton, p. 623.