Since the middle of the thirteenth century they had possessed some sort of a compass (which had come to Europe from China by way of Arabia and the Crusades) but they had very bad and incorrect maps. 13 ߹ݺ ħ(̰ ߱κ ƶƿ ڱ ̴) տ ־, ſ ϰ Ȯ ̾. (?帯 , The Story of MankindTHE GREAT DISCOVERIES(1921))