CHAPTER V
JU, KUAN, AND KO WARES
Ju yao
THOUGH no authenticated example of Ju ware is known in Europe, it is impossible to ignore a factory whose productions were unanimously acclaimed by Chinese writers as the cream of the Sung wares. Its place of origin, Ju Chou, in the province of Honan, lies in the very district which was celebrated in a previous reign for the Ch´ai pottery, and it is probable that the Ju factories continued the traditions of this mysterious ware. Nothing, however, is known of them until they received the Imperial command to supply a ch´ing (blue or green) porcelain to take the place of the white Ting Chou porcelain which had fallen into temporary disfavour on account of certain blemishes. This event, which took place towards the end of the Northern Sung period (960–1127 A. D.), implies that whatever had been their past history, the Ju Chou factories were at this period pre–eminent for the beauty of their ch´ing porcelain. It would appear from the Ch´ing po tsa chih,[95] which was written in 1193, that the Ju Chou potters were set to work in the "forbidden precincts of the Palace," and that selected pieces only were offered for Imperial use, the rejected specimens being offered for sale. Even at the end of the twelfth century we are assured that it was very difficult to obtain examples of the ware.
From the various accounts on which we have to depend for our conception of the ware, it is clear that the body was of a dark colour.[96] The glaze was thick and of a colour variously described as "approaching the blue of the sky after rain" (i.e. like the Ch´ai ware), pale blue or green,[97] and "egg white"[98] which seems to imply a white ware with a faint greenish tinge. The author of the Ch'ing pi tsang,[99] a work of considerable repute published in 1595, gives a first–hand description of the ware: "Ju yao I have seen. Its colour is 'egg white' and its glaze is lustrous and thick like massed lard. In the glaze appear faint 'palm eye' markings like crabs' claws.[100] Specimens with sesamum designs (lit. flowers), finely and minutely engraved on the bottom, are genuine. As compared with Kuan yao in material and make, it is more rich and unctuous (tzŭ jun)." Two mysterious peculiarities have been attributed to the Ju ware, viz. that powdered cornaline was mixed with the glaze, and that a row of nail heads was sometimes found under the base. The first has been taken as merely an imaginative explanation of the lustre of the glaze, but it is certain that some kind of pulverised quartz–like stone was used in the composition of later glazes, such as the "ruby red" (see vol. ii., p. 123). The second, which has been seriously interpreted to mean that actual metal nails were found protruding from the glaze (a physical impossibility, as the metal would inevitably have melted in the kiln), is probably due to a misunderstanding of a difficult Chinese phrase, chêng ting,[101] which may mean "engraved with a point" or "cut nails." The former seems to satisfy the requirements of the case, though it would be possible to render the sentence, "having sesamum flowers on the bottom and fine small nails," referring to the little projections often found on the bottom of dishes which have been supported in the kiln on pointed rests or "spurs."
In the list of porcelains made at the Imperial potteries about the year 1730[102] we read of imitations of Ju ware from specimens sent down from the Imperial collections. These imitations had in one case an uncrackled glaze on a copper–coloured body, and in the other a glaze with crackle like fish roe; and we may fairly infer that the originals had the same peculiarities. A reputed specimen[103] of modern Ju glaze[104] has a pale greyish green tint, with just a suspicion of blue, and would answer fairly well to the description tan ch´ing or fên ch´ing.
But probably our safest clue to the appearance of Ju ware is to be found in the important passage already mentioned,[105] in which a Sung writer describes the Corean wares as in general appearance like the old pi–sê ware of Yüeh Chou and the new Ju Chou ware. The typical Corean wares of this time are not uncommon, and their glaze—a soft grey green or greenish grey, with a more or less obvious tinge of blue—would satisfy the Chinese phrases, tan ch´ing and fên ch´ing, and in the bluer specimens might, by a stretch of poetic phrase, even be likened to the sky after rain. The "egg white," however, must have been a somewhat paler tint if the expression can be taken in any literal sense.