After that, appear all the colours of the rainbow, or of a peacock's tail; this is the _regimen of Mars_.

Finally the colour becomes orange and golden; this is the _regimen of the Sun_.
The reader may wish to have some description of the Essence.

The alchemists could describe it only in contraries.

It had a bodily form, but its method of working was spiritual.

In _The Sodic Hydrolith, or Water Stone of the Wise_ we are told:-- "The stone is conceived below the earth, born in the earth, quickened in heaven, dies in time, and obtains eternal glory....
It is bluish-grey and green....