This is a report issued in 1965 by the American Society for Testing and Materials. Subjects covered are as follows: Proposed recommendations affecting standards on textile materials; Water retention of fibers (centrifuge method); Twist in single spun yarns (untwist-twist method); Yarn number (skin method); Recommended method for scouring yard to remove finishing materials; Proposed revision of tentative methods of test for automotive fabrics; Estimating maturity and linear density of cotton fibers by the causticaire method; Vegetable matter and other alkali-insoluble impurities in scoured wool; Length and length distribution of cotton fibers (array method); and, Table of commercial moisture regains for textile fibers. PCONAB