Kaolin

The composition of the Eastern or proper China ware, according to accounts that have great marks of authenticity, is from two earths; one of which is, as was before mentioned, vitrescent, and is called Petunse; the other a refractory or apyrous earth; and called Kaolin.

Grind with strong arm, the circling chertz betwixt, / Your pure Ka-o-lins and Pe-tun-tses mixt […].