Lead was probably used at first for its fusibility only, but afterward it was certainly introduced for economical reasons.
Most clayworkers and investigators employ the term 'fusibility' in a special sense which is apt to be misleading.
It possesses a convenient degree of fusibility, above that of zinc and tin, but much lower than that of copper.
Nevertheless, it would be advancing too much to pretend that we must attribute all to fusibility, and nothing to density.
This process is the firing of the clay to a primrose or a white heat according to its fusibility.
Felspar is much used in the manufacture of porcelain by reason of its fusibility.
The fusibility of clays is a characteristic which has been very imperfectly studied.
Iron, which is nearly infusible, acquires almost the fusibility of gold when alloyed with this precious metal.