_Common Hall-street_.—Up the centre, a row of foundations formed of concrete (broken marble stones in hard mortar), about nine feet apart, all in a line, and about ten feet deep, presenting the appearance of having supported columns. A large square block of stone, four feet two inches square, and sixteen inches deep, without lewis holes, on a bed of concrete. A portion of a column of very debased classical form, about two feet in diameter; at the top is a hole, four inches and a half square, and the same deep, and a similar hole at the bottom; the square part seems never to have been smoothly dressed; the workmen said it was fast to the grouted concrete, at the depth of ten feet; mouldings, broken tiles, and pottery, coins of Pius, Tetricus, &c.; a quantity of animals’ bones, a stag’s skull, with the horns sawn off, and a wild boar’s tusk. In the adjoining street, a moulded block of cornice, eight inches thick, on the under side of which is a rude inscription; imbedded in a thick wall, at the same place, a pig of lead; a capital of a pillar. The tiles are of various forms, some overlapping one another, some with a kind of pattern or letters, others with marks of animals’ feet. One perfect, twenty-one inches by thirteen, of singular form. Also, what appears to have been a portion of a gable end. In December, 1850, whilst fresh drains were being made, an old Roman vase was found in a yard belonging to Mr. Parkinson, plumber, in Northgate-street, between the Abbey-square and the Abbey Green. The labourer who was employed in the drain in that neighbourhood unhappily shattered this vase in pieces. The fragments, however, were collected together with great care, and re-united by Mr. Parkinson, in whose possession it now remains. There were found with it some portions of annular brass money, much corroded.