Now it chanced just at this time that there was a rumour in Portugal that a certain Italian philosopher, named Toscanelli, had put forth views as to the possibility of a westward voyage to Cathay, or China, and the Portuguese king had, through a monk named Martinez, applied to Toscanelli to know his views, which were given in a letter dated 25th June 1474. It would appear that, quite independently, Columbus had heard the rumour, and applied to Toscanelli, for in the latter's reply he, like a good business man, shortened his answer by giving a copy of the letter he had recently written to Martinez. What was more important and more useful, Toscanelli sent a map showing in hours (or degrees) the probable distance between Spain and Cathay westward. By adding the information given by Marco Polo to the incorrect views of Ptolemy about the breadth of the inhabited world, Toscanelli reduced the distance from the Azores to 52°, or 3120 miles. Columbus always expressed his indebtedness to Toscanelli's map for his guidance, and, as we shall see, depended upon it very closely, both in steering, and in estimating the distance to be traversed. Unfortunately this map has been lost, but from a list of geographical positions, with latitude and longitude, founded upon it, modern geographers have been able to restore it in some detail, and a simplified sketch of it may be here inserted, as perhaps the most important document in Columbus's career. Certainly, whether he had the idea of reaching the Indies by a westward voyage before or not, he adopted Toscanelli's views with enthusiasm, and devoted his whole life henceforth to trying to carry them into operation. He gathered together all the information he could get about the fabled islands of the Atlantic--the Island of St. Brandan, where that Irish saint found happy mortals; and the Island of Antilla, imagined by others, with its seven cities. He gathered together all the gossip he could hear--of mysterious corpses cast ashore on the Canaries, and resembling no race of men known to Europe; of huge canes, found on the shores of the same islands, evidently carved by man's skill. Curiously enough, these pieces of evidence were logically rather against the existence of a westward route to the Indies than not, since they indicated an unknown race, but, to an enthusiastic mind like Columbus's, anything helped to confirm him in his fixed idea, and besides, he could always reply that these material signs were from the unknown island of Zipangu, which Marco Polo had described as at some distance from the shores of Cathay.