Amakusa produces a little coal and fine kaolin, which was largely used in former times by the potters of Hirado and Satsuma.
In subsequent eras the potters of King-te-chen did not fail to continue this remarkable manufacture, but its only Japanese representative was a porcelain distinctly inferior In more than one respect, namely, the egg-shell utensils of Hizen and Hirado, some of which had finely woven basket-cases to protect their extreme fragility.
The Hirado porcelainso called because it enjoyed the specia patronage of Matsuura, feudal chief of Hiradowas produced al Mikawa-uchi-yama, but did not attain excellence until.
At Hirado the ceramists affected a lighter and more delicatetone than that of the Chinese, and, in order to obtain it, subjected the choice pigment of the Middle Kingdom to refining processes of great severity.
The Hirado blue, therefore, belongs to a special aesthetic category.