"Ah, well done, Isaac. A cupel, and certain materials that he carried on his person in a small wooden chest. The receipt is not easy to translate—I too shall have to revise Wilkins." He skipped a page, then another. "The result: a small quantity of a light-bearing compound. Placed in the mouth of the dead patient, it caused his heart to resume beating, and cured him of his shock. Several minutes after, he came awake, and professed to have no memory of what had transpired. The Alchemist had by then departed, taking all the residues of the receipt with him. Hooke set it down as best he could from his recollections."