The roof was an irregular parallelogram, protected on all sides by a low, thick parapet, at two opposite corners of which, in the diagonals, were two doors of masonry, bolted with massive round bars of iron, or left open; thus excluding or admitting communication with the contiguous houses. The writer, many years ago, saw such parapet doors on the house-tops of modern Algiers; nor was the arrangement unknown in the more famous Eastern cities of antiquity, where the roofs glowed with plants in vases. When, on some public occasion, the passages were opened, the richer inhabitants, far above the noise, dust, squalor, sultriness, and comparative darkness of the narrow and noisome streets, could stroll and lounge for miles, in mid-air, among flowers; could cross even flying and embowered bridges (of which a privileged number possessed the keys, like those who have keys to the gardens of our squares); and so Dives, unseen of Lazarus, but seeing far down all things little and supine, could wander through parterres of bloom, and perfumed alleys, and shrubberies of enchantment, with effects of sunlight sprinkled, so to speak, with coolness and with shadows, soothed out of the noonday fierceness into tints various and tender; unsoiled of the stains and pains that stained and pained the poor sordid world below; until the hearts of those who thus promenaded amid circumstances of such delicious refinement and luxury, bearing and hearing news, and exchanging civilities, were "lifted up," and became even like to the heart of Nabuchodonosor the king. Sometimes the pecten-beaten dulcimer, or the fingered lyre of six strings, made long-forgotten airs of music beguile the declining day, and linger for hours longer, ravishing the night under the stars of the Syrian sky. Such the scene.