Section titles are ...(1) Introduction ...(2) Measurements of Magnetic Quality: The Magnetometric Method ...(3) Measurements of Magnetic Quality: The Ballistic Method ...(4) Examples of Magnetisation ...(5) Magnetic Hysteresis ...(6) Magnetism in Weak Fields ...(7) Magnetism in Strong Fields ...(8) Effects of Temperature ...(9) Effects of Stress ...(10) The Magnetic Circuit ...(11) Molecular Theory ...(12) Practical Magnetic Testing.