...filtration through a seam into the rock ; on the contrary, every part is as distinct as in the coal-measures elsewhere, and it could only have resulted from a...of sand, clay, shale, and coal, which make up the coal-measures. It should not be forgotten, moreover, that this point is near the northern margin of...

...filtration through a seam into the rock ; on the contrary, every part is as distinct as in the coal-measures elsewhere, and it could only have resulted from a...of sand, clay, shale, and coal, which make up the coal-measures. It should not be forgotten, moreover, that this point is near the northern margin of...

...at a later and modern period. Every part is as distinct as in the Coal measures elsewhere ; and this could only have resulted from a participation in the...shale and coal which make up the Coal measures*. It must be observed, also, that this point is near the northeastern margin of the coal basin, and beyond...

...at a later and modern period. Every part is as distinct as in the coal measures elsewhere ; and this could only have resulted from a participation in the...shale, and coal, which make up the coal measures." The same author mentions another section near the same city in which a carboniferous sandstone, horizontally...

...at a later and modern period. Every part is as distinct as in the coal measures elsewhere ; and this could only have resulted from a participation in the...produce those extensive beds of sand, clay, shale, and cual, which make up the coal measures." The same author mentions another section near the same city...

...later and modern period, and the subsequent filtration through a seam into this rock. Every part is :us distinct as in the coal measures elsewhere ; and it...productive coal seam ; a few isolated patches of sandstone and shale being all the remaining evidences of the extension of this series in that vicinity. The fissures...