Improper Fractions, 161.
Increasing Output, 228.
Indian Mining, 16.
Indicated and Brake Horse-power, 214.
Indicated Horse-power of Air Engine, 83.
Induced Voltage, 51.
Inspections by Firemen, 225.
Interchangeable Mine Doors, 9.
Inundations, 97.
Irregular Polygons, 88.