=Description of the Desert.=—The hand of Nature has defined, in the boldest characters, the limits of the great desert of India, and we only require to follow minutely the line of demarcation; though, in order to be distinctly understood, we must repeat the analysis of the term Marusthali, the emphatic appellation of this ‘region of death.’ The word is compounded of the Sanskrit _mri_, ‘to die,’ and _sthala_, ‘arid or dry land,’ which last, in the corrupted dialect of those countries, becomes _thal_, the converse of the Greek _oasis_, denoting tracts particularly sterile. Each _thal_ has its distinct denomination, as the ‘_thal_ of Kawa,’ the ‘_thal_ of Guga,’ etc.; and the cultivated spots, compared with these, either as to number or magnitude, are so scanty, that instead of the ancient Roman simile, which likened Africa to the leopard’s hide, reckoning the spots thereon as the oases, I would compare the Indian desert to that of the tiger, of which the long dark stripes would indicate the expansive belts of sand, elevated upon a plain only less sandy, and over whose surface numerous thinly-peopled towns and hamlets are scattered. =Boundaries of the Desert.=—Marusthali is bounded on the north by the flat skirting the Ghara; on the south by that grand salt-marsh, the Ran, and Koliwara; on the east by the Aravalli; and on the west by the valley of Sind. The two last boundaries are the most conspicuous, especially the Aravalli, but for which impediment Central India would be submerged in sand; nay, lofty and continuous as is this chain, extending almost from the sea to Delhi, wherever there are passages or depressions, these floating sand-clouds are wafted through or over, and form a little _thal_ even in the bosom of fertility. Whoever has crossed the Banas near Tonk, where the sand for some miles resembles waves of the sea, will comprehend this remark. Its western boundary is alike defined, and will recall to the English traveller, who may be destined to journey up the valley of Sind, the words of Napoleon on the Libyan desert: “Nothing so much resembles the sea as the desert; or a coast, as the valley of the Nile”: for this substitute ‘Indus’ [291], whence in journeying northward along its banks from Haidarabad to Uchh, the range of vision will be bounded to the east by a bulwark of sand, which, rising often to the height of two hundred feet above the level of the river, leads one to imagine that the chasm, now forming this rich valley, must have originated in a sudden melting of all the glaciers of Caucasus, whose congregated waters made this break in the continuity of Marusthali, which would otherwise be united with the deserts of Arachosia.