ON WORKING IN IRON 79
Hand Forging 79
Welding 79
Hardening Iron by Hammering 80
Case-hardening 81
A Good Way to Case-harden 82
Material for Case-hardening 84
Another Way to Case-harden 85
Another Formula for Case-hardening 86
Still Another Formula 87
To Chill Cast Iron 87
Another Mode 87
To Soften Wrought Iron 87
Alloy for Filling Holes in Iron 87
To Harden Iron for Polishing 88