Donald Laycock has thoroughly analyzed the work of Dee and Kelley. In this volume, he recounts the history of their experiments. The rest of the work consists of a pronunciation guide for the twenty-one letters, significant to untangling both the meaning and the derivation of the messages handed down from Dee and Kelley, and a basic Enochian-English/English-Enochian dictionary. The result is a fascinating linguistic and magical mystery story, integral to any study of the Enochian tradition. Stephen Skinner's lucid Preface sets the tone and historical context for today's readers.