Note 13 — RAW MATERIALS; COLLECTION, AND PREPARATION

Stevenson, writing of the Zuñi, said of their white slip: “A paint or solution is then made, either of a fine white calcareous earth, consisting mainly of carbonate of lime, or of a milk-white indurated clay, almost wholly insoluble in acids, and apparently derived from decomposed feldspar with a small proportion of mica” (1883, p. 329). Mrs. Stevenson, in a later publication, said: “A white clay is dissolved in water and then made into cones which are dried in the sun. When required for use these cones are rubbed to powder on a stone, again mixed with water, and applied in a liquid state to the object” (1904, p. 375).