Gutters, [20]

[H]

Hammock, [130], [132]

Heated bearings, Cooling compound for, [163]

Heat values of fuels, [184]

Horse-power of engines, [144]

amount required for pumping water, [172]

Horse-shoe furnace, [103]

Howell-White furnace, [104], [105]

Huntingdon mill, [69]