CiRC. No. 98. 



BOOKS AND MAPS.— The whole of ilic dislrict for the day's investiga- 

 tion is comprised wiLhin Sheet 88 S.K. one-inch ordnance map {wliich may be 

 had coloured for belli solid and superficial geology). Davis and r.ces' 'West York- 

 shire,' chap. X. contains geological and botanical information on the district. The 



Vertebrates of IJuddersfield,' by vS. T. Mosley, mny also be consulted. 



EXPLANATION.— The Afap is divide<l into square miles by horizontal and 

 perpendicular lines. 



GEOLOGY.— Mr. James W. Davis, F.O.S., F.L.S., writes :—Tiie district 

 about Penistone and Dunford Bridge is composed of millstone grit and lower coal 

 measures. The scenery is much diversified by high moorland hills and deep valleys 

 and is drained by the River Don and its tributaries. The Don has its source at 

 Dun Well, a short distance south of the rr^cky ravine at Kamsden Clough, in w^liich 

 a fine sequence of the rocks between the Kintler Scout and the third grits is 

 exposed. Other rivulets join the main stream and converge in the artihcial lake at 

 Dunford Bridge. The efHucnt water i>ursues an eastward course to Penistone, and is 

 joined by the streams fromWindledon, Wogden and other doughs- Tor some distance 

 the river runs in a deep valley of millstone grit rocks, then cuts across the outcrops 

 of the sandstones and shales of the coal measures. At Penistone the Don is joined by 

 Scout Dyke from the north. The hills are mostly capped by the Penistone Mag 

 rock. The series of intersecting valleys have been formed by the abrasion of the 

 Hag-rock and the wearing away of the shales beneath. The Penistone fiag-rock— 

 the equivalent of the KJland tlag-rock furiher north— in tiiis district reaches a thick- 

 ness of two hundred feet, and consists of three distinct beds of flaggy sandstone, 

 separated by shales and containing traceable beds of coal. Between these fiag- 

 rocks and the rough rock tliere are about eight hundred feet of shales, sandstones and 

 coals, 'j'he latter comprise hard and soft bed coals beside two or three other 

 beds of less value. The rough rock, two or three miles south of Penistone, 

 extends in a northerly direction, separated from the coal measures by a fault on the 

 east ; westward it forms the summit of Whitwood Moor, Cliff Kdgc, and Widdop 



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