Thomas Vaughan’s Aula Lucis, or The House of Light is a sublime discourse on the Alchemy of Light. Written in 1651 and first published in London in 1652, it traces the descent of Light into Matter and the means of its ultimate emancipation. Together with Vaughan’s Lumen de Lumine, or a New Magical Light, also included in this volume, these two works offer a profound insight into the mystery of the Prima Materia and the alchemical regeneration of metals and Man.