[187] See Chau Ju–kua (translated by Hirth and Rockhill), p. 9.
[188] See Hirth, Ancient Chinese Porcelain, op. cit., p. 4. The passage discovered by Hirth occurs in the T´ang pên ts´ao, the pharmacopœia of the T´ang dynasty, compiled about 650 A. D.
[189] See T´ao shuo, bk. ii., fol. 7 verso.
[190] See Ko ku yao lun, bk. vii., fol. 23. "Specimens with tear stains (lei hên) outside are genuine."
[191] The T'ao lu, bk. ix., fol. 13, quotes from T'ang shih ssŭ k'ao the following passage which bears on this point: "The Ting and Ju ware used by the Court generally have a copper band on the mouth. This was regarded as destroying their value. But modern collectors of Ting and Ju wares have come to regard the copper band on the mouth as a sign of genuineness. Dealers in curios declare it to be a sign of age."
[192] e.g. Po wu yao lan, T'ao lu, etc.
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