Mr. Roach Smith has shown, in his admirable _Illustrations of Roman London_ (the originals now in the British Museum), that the area and dimensions of the Roman city may be mapped out from the masses of masonry forming portions of its boundaries, many of which have come to light in the progress of recent City improvements. The course of the Roman Wall is ascertainable from the position of the gates (taken down in 1760-62), from authenticated discoveries and from remains yet extant. Recent excavations have also proved that within the area thus inclosed, most of the streets of the present day run upon the remains of Roman houses; and it is confidently believed that the Romans had here a bridge across the Thames, probably a wooden roadway upon stone piers, like those of Hadrian at Newcastle, and of Trajan across the Danube. It seems to be ascertained that there was a suburb also on the southern side of the Thames (Southwark), not inclosed in walls; and that the houses constructed upon this swampy spot were built upon wooden piles, of which some remains are still in existence. The Roman inscriptions and sculptures which have been discovered in London are very numerous. Sir Christopher Wren brought to light a monument to a soldier of the Second Legion, now among the Arundelian Marbles at Oxford. At Ludgate, behind the London Coffee-house, a monumental inscription, a female head in stone (life-size), and the trunk and thighs of a statue of Hercules, were dug up in 1806. In 1842 was found at Battle Bridge a Roman inscription, attesting the great battle between the Britons under Boadicea and the Romans under Suetonius Paulinus, to have been fought on this spot. Stamped tiles have been found in various parts of the city. A group of the _Deæ Matres_ was discovered in excavating a sewer in Hart-street, Crutched-friars, at a considerable depth, amongst the ruins of Roman buildings, and is now in the Guildhall Library. A fine sarcophagus was dug up in Haydon-square, Tower Hill; a statue of a youth in Bevis Marks; and an altar, apparently to Diana, was found under Goldsmiths' Hall. Fragments of wall-paintings have been carried away by cart-loads. Bronzes of a very high class of art have been found: a head of Hadrian, of superior workmanship, has been dredged up from the bed of the Thames; a colossal bronze head found in Thames-street; an exquisite bronze Apollo, in the Thames, in 1837; a Mercury, worthy to be its companion; the Priest of Cybele; and the Jupiter of the same date, are most important figures, and the first two worthy of any metropolis in any age. A bronze figure of Atys was also found at Barnes among gravel taken from the spot where the preceding bronzes were discovered. A bronze figure of an archer, also a beautiful work of art, was discovered in Queen-street, in 1842. An extraordinary bronze forceps, adorned with representations of the chief deities of Olympus, was also found in the Thames, whence again, in 1825, came the