Toledo| A recently discovered journal dating from the 15th century and allegedly written by Bartholomew Columbus, the brother of the famous discoverer of the Americas, suggests that the Genoese explorer actually carried a rather detailed map of the continent when he left Spain on his first voyage. The journal is entitled "La mia vita e le mie esplorazioni" ("My Life and My Exploration") and is signed Bertomê Corombo, the Genoese name of Bartholomew