This slender book opens a path through Maxwell's massive Treatise on
Electricity and Magnetism that attains two important objectives: first,
in Maxwell's own words and mathematics, it presents an overview of the
revolutionary field theory of electricity and magnetism, from the most
basic phenomena to the complete theory; and second, it shows, using
additional original papers by Maxwell, how the four Maxwellian equations
familiar to later physicists emerge from the more discursive general
theory. The final part of the path, leading from the Treatise to the
equations, passes, surprisingly and delightfully, through Maxwell's
presentation of the wave theory of light as a direct consequence of
electromagnetic field theory. Maxwell's numerous clear physical examples
and illustrations, and Howard Fisher's lucid explanatory notes, allow
even those without a knowledge of calculus to understand the general
features of electromagnetic theory, as Maxwell himself developed it.