This is the reiteration, gradation, and amelioration of the Tincture, or Philosopher's Stone; and the whole is called its Augmentation.
FIG. XV.
The alchemists employed many signs, or shorthand expressions, in place of writing the names of substances. The following are a few of the signs which were used frequently.
Saturn, also lead;
Jupiter, also tin;
and
Mars, also iron;