1073.2 John HEADRICH. Arcana philosophia: or, Chymical secrets, containing the noted and useful chymical medicines of Dr. Wil. and Rich. Russel chymists, viz. I. Species Vitæ, alias Universalis... VI. A Pestilential Cordial, call'd his white cordial. As also several curious chymical processes and spagerick preparations... Publish'd by J.H... 8° London: Printed by Henry Hills, sold by Eben. Tracy 1697 British Library