Luckiesh, Matthew, 1883-1967 · New York, D. Van Nostrand company · leaf 426
COLOR AND ITS APPLICATIONS 394 melting, appear to produce concentrations of coloring material proportional to the amounts of the oxides added to the mix but in some cases there is doubt as to this proportionality. There is need for systematic study in … this direction. In the case of the red glasses, for example, gold ruby, which in ordinary manufacture assumes its red color on reheating, the manipulation has consider- able effect upon the density of the color. After a colored glass has been obtained it is possible to procure from a single…
Color
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
