Excerpt from First Stage Magnetism and Electricity
The first Edition of this book (published in 1898), which has now been through four impressions, was a somewhat novel departure in elementary works, inasmuch as in the treatment of Electrostatics it introduced the important conception of Potential very early, and aimed at leading the student to view phenomena from this standpoint rather than from the antiquated and misleading one of "free and bound" charges which bad been gradually abandoned by scientific men, but found a persistent lodgment in the majority of our Secondary and Technical Schools.
The present Edition has been entirely recast. The following are the chief respects in which it differs from its predecessors: -
1. Part I. (Electrostatics), while still following the Potential method of treatment, has been considerably curtailed and simplified.
2. In Part II. (Magnetism) a brief account has been given of Tubes of Force, Magnetic Flux, Permeability, and Reluctance.
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