A short trade-journal article arguing that wool scouring liquors must be held at controlled temperatures, ideally 120-130°F and never above 150°F. It compares a hand-controlled steam valve with a self-operating thermostatic controller on a Sargent scouring bowl, using recording-thermometer charts. Hand control varied by 28°F over a day, while the controller held about 123°F within 1°. Page 2 ends with an unrelated editorial item on government employees, "How the 'Flapper' Works."