Society of Glass Technology · [Sheffield] · leaf 262
This Journal, Trans., 1920, 4, 97, for the calcium glasses; ibid., 354, forthe lead glasses. DEVELOPMENT OP VARIOUS TYPES OF GLASS. 197 (2) The batch of every glass in a series contained the same per-centage amount of silica, lead oxide, and total alkali, the onlyvariable being the proportion of… … 20%Na,O0%K26 0%Na2O 20%K2O Percentage alkali. were precisely as described in previous papers. In a series of glassesthe conditions of melting were kept the same as far as possible. (4) The solubilities of the glasses were obtained in the usualmethod described in earlier papers, and for purposes of…
Glass
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