three hundred feet above the Severn at Ironbridge, and to over seven hundred feet at the highest points. It was this outside fringe of lower coals which tempted early miners, who by means of levels in the hill sides got their “Smith’s Coal,” leaving others, which they did not then need for house fuel. Interesting instances of the outcrops of these coals are to be seen at the surface on high grounds overlooking the Dale, also on the side of the railway opposite to Black Rock quarry, where an instructive section of the Best, Middle, and Clod Coals are visible, with a slight fault displacing them. They crop out on the side of the Lincoln Hill walks; and on sinking a trial pit at Castle Green near there, many years ago, it was found that the Middle and Clod coals had been removed, and the space filled up with gob. The upper coals here, and also the pennystone, as at the Lodge Pit, remained; but at the latter the clod coal, the best coal for iron-making purposes, was removed, and the space filled up with refuse. When quarrying stone at the Black Rock, on the right hand side of the tramroad leading to Lightmoor, for the purpose of constructing the viaduct for the Wellington and Severn Junction Railroad, an interesting discovery was made of a number of fossil trees. Some were still clinging to the soil from which they originally derived their nourishment, as here shewn, somewhat imperfectly, by the accompanying engraving. One was twelve feet in circumference at the point at which the roots, which were eight in number, and two feet ten inches in their thickest part, diverged and spread, at a distance of eighteen inches from the trunk, and divided into two, and at a distance of four feet dipped into ground. The tree appeared to have been buried in mud before decay commenced, and to that circumstance was due probably its preservation from further decay, portions of trunks and branches were strewed around. We obtained a photograph and forwarded it to the Illustrated London News, in which paper an engraving appeared at the time. It was, we believe, a sigillaria, but was smooth, and shewed few of the marks common to the genus, such as appear on the accompanying enlarged section of the upper part of trees of a like kind. The roots also were smooth as far as exposed. The rock in which the roots were embedded was the Crawstone crust, and the sandrock which surrounded it was highly charged with oil or petroleum, derived from the vegetation which had produced the seam of coal, (the little flint coal) above, or from the decaying trees and branches of trees which now lie prostrate, and are embedded in the rock itself. There is one of considerable size at the time we write, five feet of which is exposed to view, the other part is obscured by the rock; and at the upper end where it enters the rock is a soft brown substance, about an inch thick, with impressions of the woody fibre of the tree itself.