Thesauri et armamentarii medico-chymici appendix [...] Testamentum Hadrianeum

The Testament of Hadrian

Here is the bridegroom, most beautiful with a Snowy and Red Niveo & Rubeo face, chosen from among many thousands. He has a head of pure gold.
White

But you must know from experience that you should not take the whole body of that Eagle Aquilae a common alchemical term for ammonium chloride or a volatile substance. Rather, take the innermost part of the bodily juice. I mean the Crystals Crystallos, shining with a snowy brilliance.
In the same way, you should not take all the limbs of the Red Lion Rubei Leonis often referring to the solid residue or oxide of iron or mercury. Take instead the inner liquid of the ruby-red blood, which is the Sulphur Sulphur thoroughly purged of all impurity.
This is the principal labor and the industry of great value. Unless you use this well and lay open the internal entrails viscera, neither the Sulphur nor the Salt will ever benefit you.

Let the Mercury Mercurius proceed from the salt. This is that Virgin’s Milk Lac virginis and that white snow Nix alba of the philosophical school. This alone is the gatekeeper of wisdom and the key-bearer of the entire art!
Let these words suffice regarding the Red and the White, and what labor is required to elicit them. It follows next by what method they must be joined together so that they may be perfected for the sacred art.
Therefore, whoever has progressed so far under divine auspices that he possesses the Sulphur fully purged along with the Salt, let him further proceed to join both according to the Philosophers’ weight Philosophûm pondus. Nature herself, retaining as much as is needed, shows the way as if with a pointing finger.
shows

Hence, when these are sealed with the Hermetic seal signaclo Hermetico an airtight glass seal, apply a moderate heat of the proper degree. It should be like the heat with which a hen Gallina, eager for chicks, broods over the eggs placed beneath her.