The most westerly peninsula of Asia and the largest in the world, being one-third the size of the whole of Europe, consisting of (a) a central plateau with pastures for cattle, and fertile valleys; (b) a ring of deserts, the Nefud in the N., stony, the Great Arabian, a perfect Sahara, in the S., sandy, said sometimes to be 600 ft. deep, and the Dahna between; and (c) stretches of coast land, generally fertile on the W. and S.; is divided into eight territories; has no lakes or rivers, only wadies, oftenest dry; the climate being hot and arid, has no forests, and therefore few wild animals; a trading country with no roads or railways, only caravan routes, yet the birthland of a race that threatened at one time to sweep the globe, and of a religion that has been a life-guidance to wide-scattered millions of human beings for over twelve centuries of time.