Democratic Sentinel, Volume 14, Number 2, Rensselaer, Jasper County, 31 January 1890 — The Primary Colors. [ARTICLE]

The Primary Colors.

Cut a circle of pasteboard, nine inches across. Divide it into four parts; then divide eaph of these into seven. t With bright, clear watercolors paint these narrow, pie-shaped slips with red : , orange, yellow, green, blue, violet, indigo, in this order. .Then.begin.again,.and do this jq each quarter. Put a round, ‘smooth nail or pin through the center of the, disk where the points of the colors meet; drive this into a heavy board edge, and whirl it around as fast as you can. The colors disappear, and you see a round but rather dirty white circle. If the colors were pure it would be pure white; if they were really prismatic you would have a little shining, white moon of light. ' ‘