Piri Reis is not only remembered for his 1513 map but for another slightly later work, a manual of sailing directions known as the , which also contains references to the book of Columbus. Reported above is Mcintosh's impression from comments made in the that the 'book' Piri is speaking of might have been Ptolemy's . Yet the Turkish scholar Svat Soucek points out that this is not the obvious deduction from the text of the where it touches on 'the great story of the discovery of America': 'The country's name is Antilia, and it was discovered by a Genoese (astronomer-cum-astrologer) named Columbus ... The story goes all the way back to Alexander, who had roamed the whole earth and written a book about it. The book remained in Egypt until the Muslim conquest, when the Franks fled the country, taking the book with them. Little attention was paid to it until Columbus read it and realized the existence of Antilia to the west of the Atlantic. He convinced the king of Spain of the possibility of its discovery and colonization, which he then successfully carried out.