Part 2 of an International Textbook Company instruction text on mill engineering, covering the auxiliary equipment of a textile mill rather than the textile machinery itself. It describes steam power (types of boilers, feedwater heaters, safety valves and gauges, grates, simple, Corliss and compound steam engines, governors, condensers), water-power and turbine types, direct and indirect heating, ventilation, electric lighting, fire protection (hydrants, Underwriters' pump, sprinklers) and plumbing. Many engineering line drawings accompany the text, and the section ends with examination questions.