PLATE XVI. CHINESE, WHITE SLIP ON BROWN GROUND
copper lustre of the fourteenth century Persian fayence. At a later time in the seventeenth century it was a favourite colour with the Persians, especially when decorated with delicate designs of flowers and ferns in a thin white slip ([Pl. xvi].). It was largely exported at that time from China and cleverly imitated in the fayence and frit-pastes of Persia. Both the original Chinese ware and the Persian imitation are well represented at South Kensington by specimens brought from the latter country. This brown glaze is seldom found alone. It is a colour that stands well the full heat of the furnace, and it may be combined with a blue and white decoration or with bands of celadon. It forms the ground-colour of the so-called Batavian ware, and at one time a brown ring was by our ancestors held to be essential on the rim of a fine plate or bowl of blue and white porcelain.
Turquoise and Purple Glazes.—As for the twin colours of the demi grand feu (the yellow in this group is quite subordinate), the so-called turquoise (including the peacock green and kingfisher blue of the Chinese) and the aubergine purple, the latter is seldom found alone. Both colours are distinguished by a very fine-grained crackle. Of the blue, when used as a single-glaze colour, we have spoken when describing the glazes of the demi grand feu.
Yellow Monochrome Glazes.—There are many shades of yellow found on Chinese porcelain: the imperial yellow of full yolk-of-egg tint, the lemon yellow, the greenish ‘eel-skin,’ and the ‘boiled chestnut.’ Only the first, the imperial yellow, is of importance as a monochrome glaze. This is the colour first used in the time of the Ming emperor Hung-chi (1487-1505), and his name is sometimes found on bowls and plates ranging in colour from a bright mustard to a boiled chestnut tint. There are some good specimens in the British Museum, and a curious piece, with a Persian inscription, at South Kensington, has already been mentioned when speaking of the reign of Hung-chi.
Cobalt Blue Monochrome Glazes.—We may distinguish three varieties of blue derived from cobalt, but the full sapphire of the blue and white ware is not found as a monochrome glaze:—
1. The Clair de lune. The term yueh-pai, or moon-white, was applied to more than one class of Sung porcelain, but above all to the Ju yao. In later times, when these primitive wares were copied, the colour was given by a minute quantity of cobalt, but it is very doubtful whether that pigment was known in early Sung days. The clair de lune glazes of Nien were considered second in merit only to the copper reds of that great viceroy. The uncrackled glazes of this class are often classed as celadon.
2. The Mazarin blue, known also as bleu fouetté or powder-blue.[89] This glaze is blown on to the surface of the raw paste, in the manner described on page 30. It sometimes covers the whole surface, and is then generally decorated with floral designs in gold, but more often it forms the ground for vases and plates with large white reserves on which designs in enamel colours are painted.
3. The Gros Bleu, in the form of large plates and vases, was a great favourite with the Arabs and other Mohammedan races. This ware, too, was often covered with a decoration of gold. There is a magnificent plate of this class in the British Museum, and at South Kensington, in the India Museum, a tall, dark-blue vase which we have already mentioned. From Persia come many specimens of this deep blue ware, of a greyish or even slaty tint, decorated, like the fond laque, with flowers in a white slip.
Black Glazes.—Very near to this last class of blue glazes we may place the ‘metallic black,’ the wu-chin of the Chinese. According to the Père D’Entrecolles, this mirror-black is prepared by mixing with a glaze containing much lime and some of the same ochry earth that gives the colour to the brown glazes, a sufficient quantity of cobalt of poor quality. In this case no second glaze is required, and the vessel is fired in the demi grand feu, i.e. in the front of the furnace. Other blacks are painted on and covered with a second glaze. The large spherical vases with tall tubular necks show little trace generally of the gold with which the black glaze was originally decorated.
Green Glazes.—The peculiar tint of green, in varied intensity, that distinguishes the famille verte is seldom found as a single glaze; and of the green Lang yao, made by Lang Ting-tso in the early part of the reign of Kang-he, it is doubtful whether we have any representatives in our European collections. This glaze is said to be somewhat in the style of his more famous sang de bœuf.