After pursuing above six hundred years the fleeting Caesars of Constantinople and Germany, I now descend, in the reign of Heraclius, on the eastern borders of the Greek monarchy. While the state was exhausted by the Persian war, and the church was distracted by the Nestorian and Monophysite sects, Mahomet, with the sword in one hand and the Koran in the other, erected his throne on the ruins of Christianity and of Rome. The genius of the Arabian prophet, the manners of his nation, and the spirit of his religion, involve the causes of the decline and fall of the Eastern empire; and our eyes are curiously intent on one of the most memorable revolutions, which have impressed a new and lasting character on the nations of the globe. 1 1 (return) [ As in this and the following chapter I shall display much Arabic learning, I must profess my total ignorance of the Oriental tongues, and my gratitude to the learned interpreters, who have transfused their science into the Latin, French, and English languages. Their collections, versions, and histories, I shall occasionally notice.] In the vacant space between Persia, Syria, Egypt, and Aethiopia, the Arabian peninsula 2 may be conceived as a triangle of spacious but irregular dimensions. From the northern point of Beles 3 on the Euphrates, a line of fifteen hundred miles is terminated by the Straits of Bebelmandel and the land of frankincense. About half this length may be allowed for the middle breadth, from east to west, from Bassora to Suez, from the Persian Gulf to the Red Sea. 4 The sides of the triangle are gradually enlarged, and the southern basis presents a front of a thousand miles to the Indian Ocean. The entire surface of the peninsula exceeds in a fourfold proportion that of Germany or France; but the far greater part has been justly stigmatized with the epithets of the stony and the sandy. Even the wilds of Tartary are decked, by the hand of nature, with lofty trees and luxuriant herbage; and the lonesome traveller derives a sort of comfort and society from the presence of vegetable life. But in the dreary waste of Arabia, a boundless level of sand is intersected by sharp and naked mountains; and the face of the desert, without shade or shelter, is scorched by the direct and intense rays of a tropical sun. Instead of refreshing breezes, the winds, particularly from the south-west, diffuse a noxious and even deadly vapor; the hillocks of sand which they alternately raise and scatter, are compared to the billows of the ocean, and whole caravans, whole armies, have been lost and buried in the whirlwind. The common benefits of water are an object of desire and contest; and such is the scarcity of wood,