The obelisks that remain to be described are the two which to us are the most interesting; the pair of "Cleopatra's Needles" which so long stood side by side at Alexandria, and are now separated by the Atlantic Ocean; one standing on the Thames Embankment in London, and the other in Central Park, New York. They were both set up in front of the great temple of the Sun at Heliopolis, about fifteen centuries before Christ, by Thothmes III., and engraved by Rameses II., the two mightiest of the kings of Egypt. After standing on their original site for fourteen centuries, witnessing the rise and fall of many native dynasties, and the establishment of the Greek dominion under the Ptolemies, they were, when Egypt became a province of Imperial Rome, transferred by Caesar Augustus to Alexandria. There they adorned the Caesareum or palace of the Caesars, which stood by the side of the harbour, was surrounded with a sacred grove, and was the greatest building in the city. What Thebes and Heliopolis were in the time of the Pharaohs, Alexandria became in the time of the Ptolemies. And though, being a parasitical growth, it could not originate works of genius, like its ancient prototypes, it could appropriate those which Heliopolis and Thebes had created. The tragic death of Cleopatra, the last of the dynasty of the Ptolemies, had taken place seven years before the setting up of these obelisks at Alexandria; so that she had in reality nothing to do with them personally. For about fifteen centuries the two obelisks stood in their new position before the Caesareum. They saw the gradual overthrow, by time's resistless hand, of the magnificent palace which they adorned; and they themselves felt the slow undermining of the sea as it encroached upon the land, until at last one of them fell to the ground about three hundred years ago, and got partially covered over with sand, leaving the other to stand alone. Then came the French invasion of Egypt, and the victories of Nelson and Abercromby, when Mahomet Ali, the ruler of the land, offered the prostrate obelisk to the British nation as a token of gratitude. The offer, however, was not taken advantage of, for various reasons. At last the patriotism and enterprise of a private individual, the late Sir Erasmus Wilson, came to the rescue, when the stone was about to be broken up into building material by the proprietor of the ground on which it lay. An iron water-tight cylinder was constructed for its transport, in which, with much toil, the obelisk was encased and floated. It was taken in tow by a steam-tug, which encountered a fearful storm in the Bay of Biscay. This led to the abandonment of the pontoon cylinder, which floated about for three days, and was at last picked up by a passing steamer, and towed to the coast of Spain; from whence it was brought to England, and set up where it now stands on the Thames Embankment. Its transport cost altogether about L13,000, and was a work of great anxiety and difficulty.