Society of Glass Technology · [Sheffield] · leaf 231
ed and prevented further flow of the metal.But as each successive column was broken away the flow wasrenewed with the result that, as already mentioned, the level ofmetal in the tank was lowered from 27 in. to 9 in. in a period ofsix hours. After the tank was dismantled it was observed that the… … oiii^rriiB ■FIRECLAYFIRECLAYSMVSTOHE LEAK Fig. 1. roughly pentagonal in section, and vary in thickness from half aninch to an inch and a half. The faces of the prisms are not equallydeveloped, and, moreover, some of the columns are trigonal, otherstetragonal in form. Similar formations are found in…
Glass
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