 | Royal Society (Great Britain) - Mathematics - 1734 - 462 pages
...unlike to 'Terra Japonica. The lower half of the Layers of Fullers- Earth, they call the IVall- Earthy this is untinged with that red above-mentioned, and...feems to be the more pure and fitter for Fulling ; and underneathall is a Stratum of white rough Stone, of about two Foot thick, which, if they dig through,... | |
 | George Alexander Cooke - England - 1817 - 330 pages
...fuller's earth they call the trull earth ; this is untinged with that rod above-mentioned, and seems to be the more pure and fitter for fulling ; and underneath all is a stratum of white rough stone, of about two foot thick, which, if they dig through, as they very seldom... | |
 | William Daniel Conybeare, William Phillips - Geology - 1822 - 568 pages
...of fullers' earth, they call -wall-earth; this is untinged with the red above mentioned, and sesras to be the more pure and fitter for fulling ; and underneath all is a stratum of white rough stone, of about two feet thick, which, if they dig through, as they very seldom... | |
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Fulling ; and underneathall is a Stratum of white rough Stone, of about two Foot thick, which, if they dig through, as they very feldom do, they find Sand again, and then is an End of their Works. One Thing is obfervable in the Site of this Earth, which... 