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New Brighton, and Manley in Cheshire. 1 These sandstones are harder and more durable than those of the underlying Bunter division; and are also of an agreeable colour, varying from light reddish- brown, to grey, yellow, and white; they are easily worked, and suited for ornamental sculpturing; these quarries also yield flagstones. The sandstone is overlaid by a great sheet of basalt and dolerite, and numerous horizontal and vertical dykes of similar igneous rocks perforate the beds, so as not only to interfere with the excavations, but also seriously to injure large masses of the stone itself. Notwithstanding this natural drawback, I know of no sandstone in the North of Ireland so well fitted for architectural purposes of an ornamental cha racter; and for such purposes it is largely used in Belfast, Newtown Ards, and the adjoining country. The crushing weight of this stone has been ascertained by Mr. Wilkinson to vary from 2240 lbs. up to 10,570 lbs. to the cubic inch. The average being about 4000 lbs. 2 1 Expl. Mem. Geol. Survey, Ireland. Maps 37, 38, 39, p. 13. 2 Prac. Geol. &c. Table of Experiments.