Textile fabrics and their preparation for dyeing : with numerous engravings and diagrams (1906)
Hummel, J. J. (John James), d. 1902, Hasluck, Paul N. (Paul Nooncree), 1854-1931, Foster, A. R · Philadelphia : David McKay · leaf 16
A Slate is so abundant in Walesthat the Welsh use it to shinglethe roofs of their houses. AThe sedimentarystone knownas shale SHALE SQUEEZE Slate is formed during mountainbuilding, when shale is squeezed sohard that the flaky mineral micarecrystallizes within it. The resultingrock is dark gray and…
Dyes and dyeing
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