In brief, I tell thee that _Saturn_ is generated of little Sulphur, little Salt, and much unripe gross _Mercury_, which _Mercury_ is to be esteemed as a Froth that floates upon the Water, in comparison of that _Mercury_ which is found in _Sol_; and is much more hot in its degree, and therefore the _Mercury_ of _Saturn_ by reason of its great coldness, hath not so quick a running Life as that which is made of Gold, wherein more heat is to be found, whence that running Life hath its original: Therefore in the inferiour world we must take notice of little _Vulcan_ in the augmentation and transmutation of Metals, as I have described those three Principles of _Saturn_, as concerning their descent, nature, and complection. And every one must know, that no transmutation of any Metal can follow out of _Saturn_, by reason of its great coldness, only and except to coagulate common _Mercury_; for the cold Sulphur of Lead can qualifie and take away the hot running Spirit of the Quicksilver, if the process be rightly ordered, wherefore it is not amiss to observe, that _Mercury_ is so detained, that the Theory should agree with the Practick, and meet together in a certain measure and concordance. You must not therefore quite reject _Saturn_, nor in all points scornfully neglect him, because its Natures and Virtues are known yet but unto few; for the Stone of the wise hath the first beginning of its Celestial, high-shining Colour only out of this Metal, and from the influence of this Planet, the Key of Constancy is delivered unto him by putrefaction, because the red cannot be made out of the yellow, except before-hand a white be made out of the beginning of the black.