Installment of the "Fabric Analysis" series from Posselt's Textile Journal (February 1918) on testing yarns and fabrics for moisture by conditioning. It describes gas- and electrically heated conditioning ovens with balances (Fig. 85, and the Baer "Standard Conditioning Oven" in Fig. 86) and the conditioning procedure, with drying temperatures for wool, cotton and silk. Worked examples calculate dry weight, regain, invoice weight and excess moisture for scoured wool, raw cotton and cotton yarn, and short sections cover testing yarns and fabrics.