Found and Ground

"Publisher's Weekly This pleasant debut from artist Ross shows how to make paint pigments from chalk, clay, rocks, and other found materials. Providing tips on how to forage colorful materials in a variety of locales, she notes that readers might look for greenish shale in fields, pink clay at beaches, and orange discarded bricks in urban areas. Instructions outline how to turn the materials into pigments. For stones, Ross advises hammering them into tiny pieces, grinding the bits with a mortar and pestle, filtering the results through a sieve, then adding them to a jar with water, letting the mixture settle, and pouring out the standing water, which leaves behind only the finest sediments at the bottom of the jar. Transforming the pigment into watercolor paint requires more water and a medium to produce a more gel-like texture, which can be made with foraged solidified gum from cherry, acacia, or other ""non-coniferous"" trees. Ross details how different mediums create different looks, observing that substituting egg whites for gum results in a glossier finish. The finicky procedure might take some trial and error to master, but the comprehensive directions ensure readers are well prepared. The result is an enjoyable take on how artists can get in touch with the natural world."