Society of Glass Technology · [Sheffield] · leaf 426
ecific gravity of water. It was impracticable to separate, by elutriation, clay particles smaller than 0-003 millimetre which constituted 50 to 100 per cent. FUELS, REFRACTORIES, AND FURNACES. 25 of many clays. It was possible to classify particles as small as0 001 millimetre by the plummet… … ifp^| Fig. 4. works at Staudt, near Montabaur, of which Fig. 4 is a sectionand Fig. 5 a ground plan. The factory adjoined the claypits,and the clay was conveyed into the second floor of the building
Glass
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