But although the Egyptian climate deals tenderly with these beautiful objects, the sand-storms are not so merciful: showers of sand are often precipitated with the violence of small shot against the polished stone; and the sharp particles of sand, by successive battery, leave their impression on the surface: at first the polish alone is blurred; but by degrees the picture-writing itself is worn away. This is apparent on the Alexandrian obelisk, of which the two sides exposed to the fury of the land-storms are seriously corroded, while the sea-face is but little injured. The British obelisk shows similar marks of wear from causes of the same kind, but has further to complain of the rapacity of travellers, who have damaged it considerably in their endeavours to carry away fragments of so brilliant a memorial of ancient times. The angles of the shaft have been chipped in many places; and as a refinement of mischief, even the perpendicular sides of some of the hieroglyphs have likewise been chiselled away. When we come to the patriarch of obelisks at Heliopolis, that of King Usertesen I., we shall find that the Nile has been busy with its sheen, and has left his mark of annual overflow on the lower part of its shaft; whilst elsewhere we have the account of a fragment of an ancient obelisk set up in the midst of a garden, in the perfumed atmosphere of luxuriant flowers, in which the wild bees have puttied up the channels of the hieroglyphics with their tenacious combs. But another and a graver trial is in waiting for our obelisk:—How will it accommodate itself to the climate of the British metropolis? It will endure: of that we can have no doubt; neither will it fail in our respect and admiration even when it has lost some of its pristine loveliness, and has submitted to harmonise its tone with the dulness of its surroundings. The hewing, the carving, and the burnishing of one of these huge monoliths, under any circumstances, must have been a laborious undertaking, and have required a considerable period for its completion. Thus we are in formed that one of the obelisks of Heliopolis, one of Pharaoh’s Needles, a work of Thothmes III., occupied thirty-six years in its elaboration. It is the tallest of its race, and now stands as a memorial of the Emperors Constantine and Constantius, in front of the Lateran Church at Rome; whereas another obelisk, now standing at Karnak (also of the Thothmes period, but executed under the direction of Queen Hatasou, daughter of Thothmes I., and sister of the second and third Thothmes), is stated, in an inscription on its base, to have been, with its fellow, hewn from the quarry and erected in the short period of seven months. Queen Hatasou’s obelisk is the second in altitude of the obelisk family, measuring 97 feet 6 inches;[10] while that of St. John Lateran, when entire, measured about 108 feet.