The area of Asia which for three or four centuries witnessed the monopoly of Arab trade included very nearly the whole continent. Asia Minor may be omitted from that area, and the remoter parts of China; but all the Indian borderland was literally at their feet; and we can now proceed to trace out some of their principal lines of route and their chief halting-places in those districts of which the mediæval geography has lately become known.
It is not at all necessary, even if it were possible, to follow the records of all the eminent Arab travellers who at intervals trod these weary roads. In the first place they often copied their records from one another, so that there is much vain repetition in them. In the second place they are not all equally trustworthy, and their writing and spelling, especially in place-names, wants that attention to diacritical marks which in Eastern orthography is essential to correct transliteration. It is perhaps unfortunate that the most eminent geographer amongst them should not have been a traveller, but simply a compiler.
Abu Abdulla Mohamed was born at Ceuta in Morocco towards the end of the eleventh century. Being descended from a family named Idris, he came to be known as Al Idrisi. The branch of the family from which Idrisi sprang ruled over the city of Magala. He travelled in Europe and eventually settled at the Court of Roger II. in Sicily. Here he wrote his book on geography. He quotes the various authors whom he consulted in its compilation, and derived further information from travellers whose accounts he compared and tested. The title of his work is _The Delight of those who seek to wander through the Regions of the World_, and it is from the French translation of this work by Jaubert that the following notes on the countries lying beyond the western borders of India are taken. This account may be accepted as representing the condition of political and commercial geography throughout those regions at the end of the eleventh century, some eighty years or so after the borders of India had been periodically harried by Mahmud of Ghazni, and not very long before the Mongol host appeared on the horizon and made a clean sweep of Asiatic civilization.