 | 1849 - 428 pages
...under-clays, but unconnected with any seam of coal. These stumps are almost universally erect,—are uniformly scattered over the seams, and otherwise...seem deposited between these stumps. The rarity of SigittarUe roots (Stigmarise) in this position, is probably due to their being incorporated with the... | |
 | Robert Hunt - 1851 - 492 pages
...under-clay, and which are themselves found attached to those roots in soils similar to the under-clay, but unconnected with any seam of coal. These stumps...seem deposited between these stumps. The rarity of Sigillarice roots (Stigmarioe) in this position is probably due to their being incorporated with the... | |
 | Robert Hunt - 1851 - 494 pages
...under-clay, and which are themselves found attached to those roots in soils similar to the under-clay, but unconnected with any seam of coal. These stumps...seem deposited between these stumps. The rarity of Sigillarice roots (StigmarKv) in this position is probably due to their being incorporated with the... | |
| |
but unconnected with any seam of coal. These stumps are almost universally erect, are uniformly scattered over the seams, and otherwise appear to have decidedly grown on the surface of the coal: the shales likewise seem deposited between these stumps.... 