Londinium was next surrounded with a wall, and a considerable extent of forest-land was cleared for the purpose of being enclosed within its ample range. It was said that the mother of Constantine, who liked much to reside in the rising city, greatly favoured this great work, and that she urged her son to promote the grandeur and security of the place. The wall encompassed the city from right to left. It began at the fort, which occupied a portion of what is now the Tower, and made a circuit of nearly two miles, and one furlong. Another wall, strongly defended with towers and bastions, extended along the banks of the river, to the distance of one mile, and one hundred and twenty yards. The height of the wall was twenty two feet, that of the towers forty feet, and the space of ground enclosed within the circumference of both walls, was computed at three hundred and eighty acres. Thus stood Londinium. Patricians and military officers, merchants and artificers, resorted thither from all parts, and there Constantine held his court, with the splendour of Imperial Rome. A few more years, and the power of the Romans began to wane, and with it waned also, the prosperity of the sea-girt isle. Stranger barks came from the shores of Saxony, and in them armed men of fierce countenances, who knew little of the arts of civilized life. What they saw, they conquered, and the noble city with its palaces and forums, its schools, of eloquence, and temples for Pagan worship, fell into their hands. Then might be seen from the old trees the red glare of the burning city; but it was again rebuilt, and though, in after years, the Danes sorely oppressed its inhabitants, it resumed its high standing as the metropolis of Britain; the seat of arts and commerce; kings reigned within its walls, and merchants came from all parts of the known world, bringing with them the productions of other countries, and exciting a spirit of enquiry and enterprise, throughout all classes of society.