7—General and Unclassified; Batteries; Central Station Practice; Distribution and Transmission; Dynamo-Electro Machinery; Electro-Chemistry and Metallurgy; Measuring Instruments and Miscellaneous Apparatus.
8—Astronomy. Meteorology. Explosives. Marine and Naval Engineering. Military. Miscellaneous Books.
MATHEMATICS
9—General; Algebra; Analytic and Plane Geometry; Calculus; Trigonometry; Vector Analysis.
MECHANICAL ENGINEERING
10a General and Unclassified; Foundry Practice; Shop Practice.
10b Gas Power and Internal Combustion Engines; Heating and Ventilation; Refrigeration.
10c Machine Design and Mechanism; Power Transmission; Steam Power and Power Plants; Thermodynamics and Heat Power.
11—Mechanics.