When Tamburlaine was first published in 1590, it was described on its title page as “Deuided into two Tragicall Discourses”—a curious reminiscence of George Whetstone's Promos and Cassandra, which in 1578 was similarly described as “Deuided into two Comicall Discourses”—and each part of Tamburlaine was divided into five acts. The publication of 1590, however, does not command our full confidence, for Richard Jones, the printer, admitted in his prefatory address “To the Gentlemen Readers” that he had excised passages that he found “far vnmeet for the matter” which the play as a whole presented. Even so, there is a prima facie case for accepting the division into two parts, each with its characteristic Marlowe prologue, and into five acts for each part, as having authorial warrant.