This is the first knotty point. Shiba Kokan, a contemporary artist who outlived Harunobu by forty-eight years, is obscurely connected with Harunobu's work. "Look out when you buy Harunobu prints!" he writes in his memoirs, published long after his death. "A great portion of the most popular ones are skilfully forged, and the forger was I, Shiba Kokan!" This warning holds good to-day, and in many cases no one can say with confidence whether certain sheets are by Shiba Kokan or Harunobu. Kokan claims, in particular, to have been the author of those with transparent draperies, those done in the Chinese manner, and those in which snow on bamboos is rendered by embossing without outline blocks. All these and other characteristic beauties of Harunobu's work he would annex, and it is doubtful if we shall ever know whether he is the greatest liar or the greatest forger in history. Probably his statements must be regarded as partly true. Until we know, however, every print signed Harunobu is suspect; for if Shiba Kokan could deceive the public of that day, we shall not be likely to detect his forgeries. There is only one consolation for the collector: if the prints of Shiba Kokan, signed Harunobu, are as beautiful as those of Harunobu, then not the collector is the sufferer, but only the unfortunate person who tries to write an accurate account of this hopeless entanglement. Other forgers, contemporaneous or slightly later, probably took advantage of Harunobu's popularity: coarse reprints from recut blocks turn up frequently in the market; and, worst of all, very fine modern forgeries and imitations of his work abound. These last two classes are the only ones that need cause the collector anxiety; they should of course be guarded against with the utmost care, for they are quite worthless. Their impure and muddy colours generally betray them to the practised eye. No means of detecting them is safe for the inexperienced amateur except a minute comparison with an unquestioned original impression of the same print. On the other hand, the contemporaneous forgeries, if beautiful, are no inconsiderable treasures. [Illustration: KYOSEN.] The name Kyosen furnishes another puzzle. It is signed to prints unmistakably by Harunobu, to prints unmistakably not by him, and to prints which he also signs. The solution seems to be that Kyosen is simply the name of the printer or engraver who did work for Harunobu and for other designers. Kyosen himself sometimes designed prints, but in such cases he signed distinctly as artist. The signature Kyosen does not, therefore, indicate a separate artist, and its presence on Harunobu's prints need not cause doubts as to Harunobu's authorship. Senga, a printer, and Takahashi Gyokushi and Takahashi Rosen, engravers, also signed certain of Harunobu's prints.