ABSTRACT
Dee’s practice of magic coincides with the beginning of one of the best documented periods in his life, a period in which he also pursued some of his most utilitarian scientific projects. After his return from the continent in the spring of 1564, and particularly from his establishment of residence at Mortlake by 1566, until he again left England in 1583, Dee was active in projects for exploration and providing advice to the government, as well as private instruction and consultation. The largest number of the works Dee claims to have written date from this period, and most of these are of a practical nature. 1 Clearly, neither magic nor the pursuit of adeptship detracted from Dee’s interest and abilities in conventional mathematics and science or his interest in their practical uses.
