Excerpts from the report Introduction: Cotton quality relationship studies made in past years by the Cotton Division of the Consumer and Marketing Service have been generally limited to upland type cotton (G. hirsutum). Very few studies have been made with American Egyptian type cotton (G. barbadense) which has extra long staple length. The statistical studies reported here are designed to reveal the relationship, contribution and importance which various fiber quality measurements of American Egyptian type cottons have to the processing performance of these cottons and to the quality of the finished product. These studies are used to test the validity and usefulness of grade and staple standards as well as laboratory measurements, and to show where improvements might be made in describing the quality of raw cotton. These studies also provide mathematical equations which a mill can use to help predict and control its manufacturing performance and its product quality by measuring and controlling the quality of the various fiber properties in the raw stock