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The quarry of Niteshill, from which this very interesting petrifaction was taken, lies about three miles south-east of Paisley, and is part of a coal formation. It consists of white sandstone, which in many parts is deeply stained by an impregnation of iron. Two very thin seams of excellent coal occur immediately under the sandstone, with the intervention of a few feet of till or blaize. The strata dip to the south, and crop out about a hundred yards north of the spot from whence the tree wasdoi:10.1017/s0263593300037500 fatcat:eejjrv2n3jhglbhhfeqxrtcbca