JAPAN
Among the remaining six, it will be seen that the ware of Iyo closely resembles that of Arita. The porcelain of Tōkyō, on the other hand, though manufactured with materials procured in Gwari, shows a composition very different from that of the Seto ware. This difference can be due only to a variation in the method of preparing the raw materials. Mr. Korschelt, by whom these analyses were made, suggests that the dealers from whom the materials are procured in Owari mix quantities of the clay called Kaeru-me with the stone Ishiko, in order to evade the expense of pulverising the latter. However this may be, since Owari, and Owari alone, furnishes the constituents of the Tōkyō porcelain mass, there is no reason to regard the latter as a separate variety. The Yokohama porcelain, again, both in the manner of its manufacture and in the quantities of its constituents, corresponds almost exactly with the ware of Kyōtō. Finally, the porcelain of Kōshiu, although, as analysed above, it certainly constitutes a special class—corresponding pretty closely with the porcelain of Limoges—has not yet been examined with sufficient care to justify a final opinion, and is, moreover, manufactured in such small quantities and for such inferior purposes that it has not secured admission to the rank of Japan's characteristic wares. The Aizu porcelain closely resembles that of Arita, and the porcelain of Satsuma has been omitted altogether, being practically identical with the latter.
The following table, compiled by Mr. Korschelt, as the result of a very large number of analyses, shows the composition of the principal porcelains and faiences of Japan in their anhydrous condition—i. e. after baking—the differences in their chemical composition
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