The Life of Al Heravy of Herat (1173-1215), the "Doctor Ubiquitus" of Islam in the age of the Crusades, gives us a picture of another Massoudy. The friend of the Emperor Manuel Comnenus, the "first man among Christians," Heravy seems able in his own person to break down the partition wall of religious feud by the common interest of science. In 1192 he was offered the patronage of the Crusading princes, and Richard Cœur de Lion begged for the favour of an interview, and begged in vain. Heravy, who had been on one of his exploring journeys, angrily refused to see the King whose men had broken his quiet and wasted his time. Before his death, he had run over the world (men said) from China to the Pyrenees and from Abyssinia to the Danube, "scribbling his name on every wall," and his survey of the Eastern Empire was the single matter in which Turks and "Romans" made common cause,—for Greeks and Latins at Byzantium alike read Heravy, like a Christian doctor. Another example of the same catholic spirit is "Yacout the Roman,"[16] whose Dictionary, finished in the earlier half of the thirteenth century, was a summary of geographical advance since Edrisi, like the similar work of Ibn Said, of the same period.
But as a matter of fact, the balance both of knowledge and power was now shifting from Islam to Christendom. The most daring and successful travellers after the rise of the Mongols were the Venetian Marco Polo and the Friar Preachers who revived Chinese Christianity (1270-1350); Madeira and the Canaries (off Moslem Africa) were finally rediscovered not by Arabic enterprise, but by the Italian Malocello in 1270, by the English Macham in the reign of our Edward III., and by Portuguese ships under Genoese captains in 1341; in 1291 the Vivaldi ventured beyond Cape Bojador, where no Moor had ever been, except by force of storm, as in the doubtful story of Ibn Fatimah, who "first saw the White Headland," Cape Blanco, between Cape Bojador and Cape Verde.
In the fourteenth century the map of Edrisi was superseded by the new Italian plans and coast-charts, or Portolani. As the Moslem world fell into political disorder, its science declined. "Judicial astrology" seemed gaining a stronger and stronger hold over Islam, and the irruption of the Turks gradually resulted in the ruin of all the higher Moslem culture. Superstition and barbarism shared the honour and the spoils of this victory.
But two great names close the five hundred years of Arab learning.
1. Ibn Batuta (c. 1330), who made himself as much at home in China as in his native Morocco, is the last of Mohammedan travellers of real importance. Though we have only abridgments of his work left to us, Colonel Yule is well within his rights in his deliberate judgment, "that it must rank at least as one of the four chief guide books of the Middle Ages," along with the Book of Ser Marco Polo and the journals of the two Friar-travellers, Friar Odoric and Friar William de Rubruquis.
2. With Abulfeda the Eastern school of Moslem geography comes to an end, as the Western does with Ibn Batuta. In the early years of the fourteenth century he rewrote the "story and description of the Land of Islam," with a completeness quite encyclopædic. But his work has all the failings of a compilation, however careful, in that, or any, age. It is based upon information, not upon inspection; it is in no sense original. As it began in imitation, so it ended. If it rejects Ptolemy, it is only to follow Strabo or someone else; on all the mathematical and astronomical data its doctrine is according to the Alexandrians of twelve hundred years before, and this last précis of the science of a great race and a great religion can only be understood in the light of its model—in Greek geography.
