But, in a field where of necessity we are so much limited, we willingly pass from the consideration of these treasure or _khasne_ phantoms (which alone sufficiently ensure a swarm of ghostly terrors for all Oriental ruins of cities,) to the same marvellous apparitions, as they haunt other solitudes even more awful than those of ruined cities. In this world there are two mighty forms of perfect solitude--the ocean and the desert: the wilderness of the barren sands, and the wilderness of the barren waters. Both are the parents of inevitable superstitions--of terrors, solemn, ineradicable, eternal. Sailors and the children of the desert are alike overrun with spiritual hauntings, from accidents of peril essentially connected with those modes of life, and from the eternal spectacle of the infinite. Voices seem to blend with the raving of the sea, which will for ever impress the feeling of beings more than human: and every chamber of the great wilderness which, with little interruption, stretches from the Euphrates to the western shores of Africa, has its own peculiar terrors both as to sights and sounds. In the wilderness of Zin, between Palestine and the Red Sea, a section of the desert well known in these days to our own countrymen, bells are heard daily pealing for matins, or for vespers, from some phantom convent that no search of Christian or of Bedouin Arab has ever been able to discover. These bells have sounded since the Crusades. Other sounds, trumpets, the _Alala_ of armies, &c., are heard in other regions of the Desert. Forms, also, are seen of more people than have any right to be walking in human paths: sometimes forms of avowed terror; sometimes, which is a case of far more danger, appearances that mimic the shapes of men, and even of friends or comrades. This is a case much dwelt on by the old travellers, and which throws a gloom over the spirits of all Bedouins, and of every cafila or caravan. We all know what a sensation of loneliness or 'eeriness' (to use an expressive term of the ballad poetry) arises to any small party assembling in a single room of a vast desolate mansion: how the timid among them fancy continually that they hear some remote door opening, or trace the sound of suppressed footsteps from some distant staircase. Such is the feeling in the desert, even in the midst of the caravan. The mighty solitude is seen: the dread silence is anticipated which will succeed to this brief transit of men, camels, and horses. Awe prevails even in the midst of society: but, if the traveller should loiter behind from fatigue, or be so imprudent as to ramble aside--should he from any cause once lose sight of his party, it is held that his chance is small of recovering their traces. And why? Not chiefly from the want of footmarks where the wind effaces all impressions in half an hour, or of eyemarks where all is one blank ocean of sand, but much more from the sounds or the visual