Describes the use of the electron beam microanalyzer to analyze paint samples from the inner surfaces of the Middle Kingdom Bersheh Sarcophagus in the Museum of Fine Arts, Boston. The following table reveals the elements and the compounds present as color pigments. The yellow pigment specimen lost sulfur in the area of the incident electron beam so rapidly that none was detectable after 5 minutes exposure. The calcium found in most of the specimens comes from a base coat of calcium carbonate. COLOR ELEMENTS FOUND IDENTIFICATION Yellow Arsenic Arsenic trisulfide White Calcium Calcium carbonate Chlorine trace Silicon trace Iron trace Blue Calcium Copper-Sodium silicate Silicon Copper trace Red Calcium Iron oxide and calcium carbonate Iron Silicon trace Chlorine trace Blue Calcium Egyptian blue Silicon Copper Iron trace Chlorine trace Green Calcium Copper metaborate Silicon Copper Iron trace Chlorine trace Pink Calcium Mixture of iron oxide and calcium carbonate Silicon trace Iron trace Chlorine trace YellowCopper Green Silicon Chlorine -- AATA