Show I 1 1 1 1 IMPROVED adres den engineer hag lag discovered a method of I 1 impregnating p well weil dried ed sandstone with soluble bilica and causing the tone to become come ligh lighter tier in color bome some kinds intensely white end and translucent and arid capable of the 11 highest chest polish equal to that of the purest marble rhe the inventor in fiet fact imitates marble of every color b by adding mineral colora to rhe the liquid used for impregnation pr om this improved sandstone is said to cost considerably less than marble marbie and to be better capable of resisting the injurious action of 0 fire lire |