Figure D10 OCTAHEDRON
Welcome relief for the indignant Nose
In the next dark chamber we have found.
Sulphur a transformation undergoes
Once it has been to lead in crystals bound.
Black and massy, galena, resound
To the slightest æthereal wave:
Telluric currents thrill deep underground
Guided by cat’s-whisker to this cave
So heaviness by light is told, and does behave.