| Show standard of colors the call for international standards of all kinds Is becoming every day moro more insistent with tho the progressive unification of the industries of the world the latest demand of this kind Is for at an international standard ot colors I 1 chemists manufacturers of dyo dyl stuffs and pigments and many others would benefit by such a standard it ts Is suggested that when once anee the desired color scheme has been decided upon the best method of perpetuating the standards and rendering them available for comparison everywhere would wo uld be by means of colored glasses with which a could be constructed ted A tentative instrument ot of this kind based on an arbitrary color scheme has beon been m mado i abc youth companion |
