An Improved Backing for Opal, Plain, and Colored Glass Tiles and the like.

摘要

17,178. Greenslade, C. July 23. Compositions containing plaster and albuminous matter.-A backing for glass tiles and the like consists of 1 peck of Keene's cement, ¢ peck of Bath stone dust, 1 lb. of size, and “ lb. of ochre.