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.