On 29 June, however, a cannon set fire to the thatch of the Globe and burned the theatre to the ground, an event which pinpoints the date of a Shakespeare play with rare precision. Textual sources In 1623, John Heminges and Henry Condell, two of Shakespeare's friends from the King's Men, published the First Folio, a collected edition of Shakespeare's plays. It contained 36 texts, including 18 printed for the first time. Many of the plays had already appeared in quarto versions—flimsy books made from sheets of paper folded twice to make four leaves. No evidence suggests that Shakespeare approved these editions, which the First Folio describes as "stol'n and surreptitious copies". Nor did Shakespeare plan or expect his works to survive in any form at all; those works likely would have faded into oblivion but for his friends' spontaneous idea, after his death, to create and publish the First Folio. Alfred Pollard termed some of the pre-1623 versions as "bad quartos" because of their adapted, paraphrased or garbled texts, which may in places have been reconstructed from memory. Where several versions of a play survive, each differs from the other. The differences may stem from copying or printing errors, from notes by actors or audience members, or from Shakespeare's own papers. In some cases, for example, Hamlet, Troilus and Cressida, and Othello, Shakespeare could have revised the texts between the quarto and folio editions. In the case of King Lear, however, while most modern editions do conflate them, the 1623 folio version is so different from the 1608 quarto that the Oxford Shakespeare prints them both, arguing that they cannot be conflated without confusion. Poems In 1593 and 1594, when the theatres were closed because of plague, Shakespeare published two narrative poems on sexual themes, Venus and Adonis and The Rape of Lucrece. He dedicated them to Henry Wriothesley, Earl of Southampton. In Venus and Adonis, an innocent Adonis rejects the sexual advances of Venus; while in The Rape of Lucrece, the virtuous wife Lucrece is raped by the lustful Tarquin. Influenced by Ovid's Metamorphoses, the poems show the guilt and moral confusion that result from uncontrolled lust. Both proved popular and were often reprinted during Shakespeare's lifetime. A third narrative poem, A Lover's Complaint, in which a young woman laments her seduction by a persuasive suitor, was printed in the first edition of the Sonnets in 1609. Most