ABSTRACT
IN 1570, one of the most important books of the Elizabethan period was published in London. This was Henry Billingsley's English translation of Euclid, with a preface described on the title page as
. . . a very fruitfull Preface made by Maister John Dee, specifying the chief Mathematicall sciences, what they are, and wherunto commodious; where also, are disclosed, certaine new secrets Mathematicall and Mechanicall, until these our daies greatly missed.
