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hundred yards, a vein of three quarters of a yard thick 5 1 5thly, at one hundred and eighty yards, White coal three feet, four inches; i6thly, at six feet further, Black coal three feet, six inches; iythly, at one hundred yards, Bowney coal three quarters of a yard thick; i8thly, at two hundred yards, first Old Dow coal one yard, and Bin five inches thick; icjthly, six yards, a vein of eight feet thick; 2othly, one hundred and fifty yards, a vein of three quarters of a yard thick ; 2 1 st, three hundred yards, the veins of White and Black coals, with two yards of earth between them; 2 2d, at three hundred yards, seven foot vein; 23d, two hundred yards, Old Dow again; and 24thly, at one hundred yards, five quarters vein; of these veins the dip is from North to South, two yards in every seven. In following the level, however, we had but seen a small part of the subterraneous na- vigation, which in its different ramifications and various tunnels, is carried upwards of twenty miles. Both above and below us also, are other levels, connected with the middle one in which we were, by passages. The one over head enters the rock at Walkden-Moor, two miles from Worsley, and runs in a direct line three miles, thirty-five yards above the second level, to which its product is let down by an inclined plane and mil road, made
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