These usually are composed of starch, coloringmaterial, with a little nitrogenous material in the form of gelatine, casein, or albumin.
3
In 1901 the United States treasury department adopted a similar ink except that it permitted the introduction into it of an unnamed blue coloringmaterial.
4
The Functional Pigment segment is engaged in the manufacture and sale of magnetic powder materials, various coloringmaterials and others.
5
It happened that Kennedy had some artificial flowers on a stand, which he had been using long before in the study of synthetic coloringmaterials.