Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/319

 with copper, intersect this rock. From the northern edge of the loch rises a considerable hill, called Pitscanellie hill, composed entirely of grit-stone, whose different beds, alternating with a coarse breccia, furnish stones for slating, paving, mill-stones, and rubble work. From the south side of the loch rises a hill of freestone, whose summit is covered by whin. This bed of whin is of no great breadth, and extends about two miles in length, from one end of the ridge to the other. If we may guess from this description, the prevailing rock seems to be the red sandstone, so common in this island; it is in basins formed in this rock that the shell marle is found in the vicinity of Kelso.