118,435. Willcocks, E. W. Aug. 24, 1917. Making-up material for threatrical use. - Greast paints consist of a mixture of a fattv base, such as hard and soft white paraffins, with a pigment prepared by treating an insoluble white powder with a solution of a colouring matter which is insoluble in the fatty base and then drying and re-powdering the product. Specified insoluble powders are starch, chalk, kaolin, zinc oxide, and mixtures thereof. Specified aniline dyes for use as the colouring matter are victoria scarlet, methylene blue, and auramine. Various tints may be prepared by mixing the dye solu'- tions or the dyed powders, with or without the addition of a black dye or powder. The proportion of dye to white powder may be varied', but the proportion of the powder to the fatty base is standardized.