The manual provides practical instruction on fusing lead without solder, explaining necessary apparatus, hydrogen gas properties, safe generator construction and charging, and connections and flame management. It details seam types and techniques for pipe seams and acid-resistant linings, and addresses special burners and an alternative method using illuminating gas with flux. Chapters cover soft soldering with a blow pipe and applications such as lining chemical and storage tanks, plus precautions, troubleshooting, and the need for careful study and hands-on practice to master the craft safely.