There is another kind of stone found a little way above Pateley-bridge, well adapted for flags, window heads and soles, staircases, landings, tomb-stones, and grind-stones; but owing to the beds being thin, it is not well adapted for general building purposes. At Fellbeck, near Smelthouse-mill, a slate quarry has lately been opened, which produces a slate of a darker colour than that of Idle, is very sound, lays well on, and will probably improve in fineness, if pursued to a greater depth. A ton of it will cover about ten square yards. Another Slate-Quarry, at Bouthwaite, near Pateley-Bridge, has recently been discovered; the produce of which is much superior to that of Idle; a ton of it will cover about 14 square yards. All this stone and slate is immediately upon the adopted line, or can be brought to it for 4.25d. per foot, which, with the expense of carriage to Bolton-Percy will cost at that place as below:-- Pounds _s._ _d._ Rail-dues 30 0 3 1.5 miles, at 1.25d. per ton per mile Waggon-dues, 0 3 1.5 do. do. 0 6 3 Calculating 16 0 0 4.75 feet of this stone to weigh one ton, it appears the carriage of each foot will cost And the 0 0 4.25 original cost delivered on the line Cost of this 0 0 9 stone at Bolton-Percy per foot Which if necessity requires, may experience a little reduction. At this time the Bramley-fall stone delivered at Selby, costs 1s. per foot; and at York during the building of Ouse-bridge it cost from 15d. to 16d. STONE FOR HIGHWAYS. This is found in immense quantities at Greenhow-hill, distant from Pateley-bridge two miles, it resembles a grey flint; the road from Pateley-bridge to Skipton is principally composed of it; it is hard but easily broken small, and after a little using almost resembles one entire stone; its use and extraordinary properties are not known to a great distance, particularly towards Ripon or Ripley; this may be accounted for in two ways--first, the hills in either direction are long and steep; and 2dly, other materials are just at hand, of a quality sufficient for a road where the forbidding ascents deny the frequent passing of heavy carriages. This stone has been compared to that at Middleton-Tyas, near Richmond, and when analysed is found to be exactly of the same quality, although a little lighter in colour; it was compared to this merely to prove a corresponding property.