23. COVER OF A BOOK OF THE GOSPELS. Ninth century. Carlovingian _Abbey of St. Gall, Switzerland_ 113
24. THE CRUCIFIXION AND ALLEGORICAL FIGURES. Ninth century. Carlovingian _Victoria and Albert Museum, London_ 115
25. PANEL OF THE CRUCIFIXION, from a book cover. Tenth century. German _John Rylands Library, Manchester_ 123
26. CEREMONIAL COMB. Eleventh century. English _British Museum, London_ 127
27. A BISHOP’S CROZIER. Fourteenth century. French _Victoria and Albert Museum, London_ 131
28. THE CORONATION OF THE VIRGIN. Thirteenth century. French _Louvre, Paris_ 137
29. THE VIRGIN AND CHILD. Thirteenth century. French _Bargello, Florence_ 139
30. THE DESCENT FROM THE CROSS. Thirteenth century. French _Louvre, Paris_ 141
31. A POLYPTYCH, with the Virgin and Child and various scenes from the Nativity. Fourteenth century. French _Victoria and Albert Museum, London_ 143
32. FIRST LEAF OF A DIPTYCH. Fourteenth century. French _Mayer Coll., Liverpool Museum_ 145
33. PLAQUE FROM A CASKET REPRESENTING DANCERS. Fourteenth century. French _Bargello, Florence_ 147
34. A MIRROR CASE, with the Elopement of Guinivere and Lancelot. Fourteenth century. French _Mayer Coll., Liverpool Museum_ 149
35. PANEL FROM A CASKET. Fourteenth century. French _Bargello, Florence_ 151
36. TRIPTYCH MADE FOR BISHOP GRANDISON OF EXETER. 1327-1369. English _British Museum, London_ 153
37. TRIPTYCH. Early fifteenth century. Italian _Victoria and Albert Museum, London_ 155
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Barbier de Montault, Xavier. Le symbolisme du bélier sur les crosses d’ivoire au moyen âge. Revue de l’Art Chrétien. 1883, p. 157.
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Spitzer, Frédéric. La Collection Spitzer. Les Ivoires. Notice de M. Alf. Darcel. Paris, 1890.
Garucci. Storia dell’ arte cristiana. Vol. 6. Prato, 1872-80.
Gatty, Charles T. Catalogue of Mediæval and Later Antiquities contained in the Mayer Museum. Gilbert & Walmsley. Liverpool, 1883.
Goodyear, W. H. Roman and Mediæval Art. Flood & Vincent, Chatauqua Press.
Gori, Ant. Francesco. Thesaurus Veterum Diptychorum Consularium et Ecclesiasticorum. 3 vols. Florence, 1759.
Graeven, Hans. “Entstellte Consular Diptychon.” Mitth. Arch. Instituts. Rom. 1892, p. 204. “Ein Reliquienkästchen aus Pirano.” Jahrbuch der Kunsthistorischen Sammlungen des Allerhöchsten Kaiserhauses, Wien. Vol. XX. 1899. “Der Wiener-Genesis und byzantinische Elfenbeinwerke.” Do. Vol. XXI. 1900. “Antike Vorlagen Byzantinische Elfenbeinreliefs.” Jahrbuch der K. Preuss. Kunstsammlungen, XVIII. 3. 1897. Photographs. Frühchristliche und mittelalterliche Elfenbeinwerke in photographischer Nachbildung “Aus Sammlungen in England.” 1898. “Aus Sammlungen in Italien.” 1900.