The subject of enamel has a close relation to that of these pages, although its uses, as need hardly be said, far transcend the limits of portraiture. Every substance, whether earthenware, stone, or metal, to which a vitreous substance can be made to adhere by heat may be enamelled, but this term is usually restricted to metalwork ornamented by a vitreous glaze. As in the case of illuminated manuscripts, we find the earliest instances of the use of enamel in Egypt, and Dr. Birch is our authority for believing that there was a method of inlaying glass, jasper, and lapis lazuli, which resembled enamel in effect, employed as far back as the Fourth Egyptian Dynasty-that is to say, some four thousand years before the Christian era. The Chinese have had it in use for unknown centuries, and it was applied by the Etruscans and Greeks to enrich their jewellery. It has been found employed for horse trappings and for human ornaments, such as brooches, bracelets, and rings, both in this country and in Ireland, under circumstances which lead us to assign it to pre-Roman days.

But it is with the seat of Roman power on the Bosphorus, namely, Byzantium, in the early Christian centuries, that antique enamels seem most closely associated; and the museums of Europe contain great numbers of marvellous works of this description originating from that source. What has come down to us is for the most part intended for ecclesiastical use; reliquaries, diptychs, triptychs, the covers of missals, chalices, crosses, and objects of a like nature abound. On many of these there are what may, in a sense, be termed portraits of saints and ecclesiastical dignitaries; but it is obvious that no attempt at likeness, as we moderns understand it, can have been made in this work of the fourth to the eleventh centuries. This Byzantine style and influence, which have left such a deep mark in art, may be said to survive to this day in the ritual of the Greek Church; but that is another story. I may remark that the Byzantine work is for the most part what is called cloisonné; this term, and one of a somewhat similar sound, namely champlevé, is constantly used in descriptions of old enamel, and it may be well, therefore, to define what is meant by each respectively.

The former has been described by M. Lebarte as being made in the following manner: "The plate of metal intended as a foundation was first provided with a little rim to retain the enamel. Slender strips of gold of the same depth as the rim were then bent in short lengths and fashioned to form the outline of the pattern. These short bits were then fixed upright upon the plate. The metal outline being thus arranged, the intervening spaces were filled with the different enamels, reduced to a fine powder and moistened into a paste. The piece was then placed in the furnace, and when the fusion was complete, was withdrawn, with certain precautions that the cooling might be effected gradually. The enamel, when thoroughly cold, was ground and polished. It is easy to comprehend that the old artists must have used very pure gold and extremely fusible enamels, in order that the plate might not be injured from the action of the fire or the thin strips of metal be melted by the heat which fused the paste."

AFTER J. HYSING.

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