The Composition of Line Suitable for Various Purposes in Glass-making

 JSGT 1922 V06 T221-T228

There has recently been published in America a Provisional Specification for limestone for use in the manufacture of glass. The specification, as will be seen, attempts to divide possible limestones into three classes and specifies the minimum amount of calcium oxide and of magnesium oxide which should be present, as also the maximum amount of various impurities.

Violet Dimbleby & W. E. S. Turner