Larvae of the flesh fly, Sarcophaga carnaria, were ground in a mortar, dried, ignited and analyzed for inorganic constituents. Other larvae were hydrolyzed with acids and analyzed for amino acids. Other larvae were thoroughly washed, ground in a mortar, diluted with water and analyzed for enzymes. The following enzymes were found in the order of their activity:[long dash]3 plus: amylase, glycogenase, saccharase and tyrosinase; 2 plus: inulinase, lactase, lipase, trypsin, nuclease, desamidase, urease, saccharo-phosphatase and glycerophosphatase; 1 plus: maltase, glycolytic enzyme, pepsin and fructose. It is suggested that an extract of larvae so rich in enzymes might be useful in acute infections of the intestinal tract as it would tend (1) to decompose bacterial poisons and (2) to assist in the prompt and complete digestion of the intestinal contents.