In Mecca yearly two or three hundred thousand Moslims from all parts of the world come together to celebrate the hajj, that curious set of ceremonies of pagan Arabian origin which Mohammed has incorporated into his religion, a durable survival that in Islâm makes an impression as singular as that of jumping processions in Christianity. Mohammed never could have foreseen that the consequence of his concession to deeply rooted Arabic custom would be that in future centuries Chinese, Malays, Indians, Tatars, Turks, Egyptians, Berbers, and negroes would meet on this barren desert soil and carry home profound impressions of the international significance of Islâm. Still more important is the fact that from all those countries young people settle here for years to devote themselves to the study of the sacred science. From the second to the tenth month of the Mohammedan lunar year, the Haram, _i.e._, the mosque, which is an open place with the Ka'bah in its midst and surrounded by large roofed galleries, has free room enough between the hours of public service to allow of a dozen or more circles of students sitting down around their professors to listen to as many lectures on different subjects, generally delivered in a very loud voice. Arabic grammar and style, prosody, logic, and other preparatory branches, the sacred trivium; canonic law, dogmatics, and mysticism, and, for the more advanced, exegesis of Qorân and Tradition and some other branches of supererogation, are taught here in the mediaeval way from mediaeval text-books or from more modern compilations reproducing their contents and completing them more or less by treating modern questions according to the same methods.