**Chapter titles are ...(1) Historical ...(2) Magnetic Properties ...(3) Classification of Electromagnets ...(4) Forms of Electromagnets ...(5) Properties of the Magnetic Circuit ...(6) Effect of Air Gap ...(7) Effect of Joints ...(8) Magnetic Leakage ...(9) Hysteresis ...(10) Retentiveness ...(11) Table of Permeabilities ...(12) Limits of Magnetization ...(13) Magnetic Testing ...(14) Materials of Construction ...(15) Form of Cross Section of Core ...(16) Table Giving Thickness and Weight of Insulation on Wires ...(17) Formulae for Winding ...(18) Density of Current in Winding ...(19) Heating of Magnet Coils ...(20) Permissible Amperage and Depth of Winding ...(21) Weight of Magnet Winding ...(22) Relations Between Constants of Coils ...(23) Relation of Resistance of Winding to Resistance of External Circuit ...(24) Tractive Electromagnets ...(25) Table Giving Relation Between Magnetization and Traction ...(26) Attractive Electromagnets ...(27) Design of Tractive Electromagnets ...(28) Electromagnets for Producing Strong Fields ...(29) Polarized Mechanisms ...(30) Electromagnets for Use with Currents of Brief Duration ...(31) Alternate Current Electromagnets ...(32) Hysteresis Loss ...(33) Eddy Current Loss ...(34) Attraction and Repulsion of Alternating Current Conductors ...(35) Tables Giving Relation Between U.S. and Metric System ...(36) Properties of Copper Wire B&S Gauge ...(37) Properties of Copper Wire B W Gauge ...(38) Temperature Coefficients ...(39) Weight of Copper in 100 Pounds of Insulated Wire. **