The Summary of Physics Restored

136Sublimation is the conversion of a moist and heavy nature into a light one, or its exhalation into vapour. Its purpose and benefit are threefold. First, through attenuation, a gross and impure body is cleansed and gradually stripped of its dregs. Next, through sublimation, it more abundantly acquires the powers of higher things, which flow down continually. Finally, through such evacuation earth is relieved of superfluous and oppressive moisture, which fills her passages, impedes the action of heat and the passage of natural spirits, and indeed violently suffocates them. This removal of excess moisture takes away the cause of obstructions, relieves earth’s nauseated stomach, and makes it fitter for digestion.