Several elegant modern monuments adorn the walls, and in the north aisle is the alabaster tomb of Bishop Penny, many years abbot of the neighbouring monastery of St Mary de Pratis. In the church-yard the military trophies of a black tomb commemorate Andrew Lord Rollo. This nobleman was an instance of the attraction which a martial life affords to an elevated mind, for he entered the service at the age of forty, when generally the habits and inclinations of life are so fixed, as scarcely to admit any change. After many years of severe and dangerous services, he died at Leicester, as the inscription informs us, on his way to Bristol, for the recovery of his health, 1765. It is to be observed of this and the other churches in this place, that the entrance is by a descent of several steps; a circumstance proving incontestibly, that the ground without has been considerably raised, since no reason could induce the founders of these sacred edifices to sink the floors beyond the natural level; nor is the surface of the church-yards alone, higher than the floors of the churches; so caused by the continued interment of the dead: but the general level of the pavements of the streets is also higher; from which it must be inferred, that the ground on which the present houses are built has been every where raised, and that very considerably. That the rubbish produced by buildings, and particularly the consumption of fuel, should produce this effect, is what any one may readily believe; and the Bishop of Llandaff calculates in his Chemical Essays, that the quantity of coal consumed annually in London, would raise an area of ten miles square, a full inch.