The purpose of the study upon which this report is based was to learn the margins taken at each step in marketing Valencia oranges grown in the interior of Florida through eight selected auction markets, to learn in detail the services associated with each charge, and, so far as possible, to ascertain the costs of these services in the period 1940-48. The costs and margins involved in marketing Florida oranges from 1940 to 1948, the period covered by the study, were ascertained on the basis of secondary data and were calculated from the regularly reported auction-price series and the retail-price series. Weighted-average auction prices, obtained from the Market News Service of the Production and Marketing Administration, were subtracted from weighted-average retail monthly prices of Bureau of Labor Statistics to learn the joint wholesale-and-retail margin. An estimated 5-percent allowance has been made to cover the waste, spoilage, and shrinkage that occurs between the groves and the retail sales.