342 MAPS AND SECTIONS. 



Sheet 20. By B. N. Peach. Castlecary Eailway Station. Carboni- 

 ferous Limestone, with dyke of Basaltic rock, Millstone Grit, Boulder 

 Clay, Alluvium. Outcrops of Castlecary and Calmy Limestones and 

 Hirst Coals — a Coal Seam in Millstone Grit. 



Sheet 23. By R. L. Jack. Garscadden and part of the Kilpatrick 

 Hills. Contemporaneous (L. Carboniferous) Porphyrites and Ashes, 

 ■with " Necks," Carboniferous Limestone with intrusive Basaltic rocks, 

 Boulder Clay, Gravel, Peat, Alluvium. Stratified rocks at the Slacks 

 intercalated among the igneous rocks of the Kilpatrick HiUs-; conglo- 

 merates of Douglas Muir at the base of the Carboniferous Limestone 

 series, overlying the Traps ; outcrops of the Main (Hurlet) Limestone 

 and Coal, the Garscadden Blackbands, &c. ; portion of a line of deep 

 Drift deposits extending from the Clyde, near Bowling to the Forth 

 at Grangemouth. 



Sheet 24. By E. L. Jack. Kirkintilloch. Millstone Grit, Car- 

 boniferous Limestone, Boulder Clay, Gravel, Peat, Alluvium. 



Sheet 25. By B. N. Peacu and B. L. Jack. Gartshore and Con- 

 porrat. Carboniferous Limestone, with intrusive Basaltic rocks in 

 sheets and dykes. Millstone Grit, Boulder Clay, Gravel, Peat, Alluvium. 

 Outcrops of Castlecary, Calmy or Arden, and Index or Cowglen Lime- 

 stones, Meiklehill and Shirva Coals and Gartshore Ironstones. Re- 

 markable anticlinal axis known as the " Rigging ;" number of Peat 

 Mosses and Alluvial patches, indicating silted-up lakelets. 



Sheet 26. Dumbarton. By B. N. Peach. Cumbernauld, Fanny- 

 side Loch. Carboniferous Limestone, Millstone Grit, Coal Measures, 

 with Basaltic dykes; Boulder Clay, Peat, Alluvium. Outcrops of 

 Calmy and Castlecary Limestones, Shirva Coals, and Slatyband Iron- 

 stone. R. L. J. 



England and Wales. Geological Relievo-map of. By H. F. Brion. 

 The geology from Sir R. Murchison. Scale of map about 26 

 miles to an inch. Yertical scale much exaggerated. 



3 Quarter-sheets of the Geological-Survey Map. Scale an 



inch to a milcc 



Sheet 88, N.E. By A. H. Green, J. R. Daktns, J. C. Ward, and 

 R. Russell. Halifax, Huddersfield, Dewsbury. The beds shown are 

 Alluvium, Brickearth and Gravel (along the valleys), Coal Measures 

 and MiUstone Grit, the last two with very many divisions (flagstones, 

 shales, sandstones, &c. being distinguished). Many outcrops of coals 

 and ironstones are marked, and a multitude of faults and dips. 



Sheet 92, S. W. New Edition. 



Sheet 93, N.W. (not issued until 1874, though dated 1873). By 

 W. T. Aveline, J. R. Dakyns, and C. F. Strangways. Knaresborough, 

 Ripley, Boroughbridge, Easingwold. The beds shown are Alluvium, 

 River-terraces, "Warp tko., Post-glacial Gravel and Sand, Marlstone, 

 Keuper and Bunter, Magnesian Limestone and Marls, IVIillstone Grit 

 and Yoredale Rocks, the last two with many divisions (shales and 



