| The copper pyrites found in Cornwall are sulphuret of copper. |
| Masses of sulphuret of zinc, in the form of blende, were noticed at this locality. |
| Thus the sulphuret of potassium was called liver of sulphur. |
| The ore used is the common sulphuret, with a foliated, glittering and cubical fracture. |
| The best remedy is probably a solution of sulphuret of potassium. |
| The colour of the hair, unaltered by the silver solution, instantly turns black when moistened with the sulphuret. |
