Note C — Fig.1 (continued 2)

Tablets of paper instead of cardboard are recommended because in primary instruction the standards or types of color presented to the child ought to be the purest possible expressions of the colors represented, and a piece of color material cannot meet this requirement after having been used one year by a child. The necessary expense of cardboard tablets practically precludes a new supply each year. But the papers can finally be used to form, by pasting, some chart or combination which the pupil may be allowed to own as a sample of his work.