1. ?A Dynamical Theory of the Electromagnetic Field?, The Scientific Papers of James Clerk Maxwell, ed. W. D. Niven (2 vols.; Cambridge: Cambridge University Press, 1890; combined vol., New York: Dover Publication, n.d.), I, 554?564. Faraday's law appears side by side with Ampère's for the first time in 1868, six years after Maxwell's form of Ampère's law was first published, and three years after it received its definitive form in the paper ?A Note on the Electromagnetic Theory of Light?, Scientific Papers, II, 138?39. However, the equations reappear in the earlier form in A Treatise on Electricity and Magnetism (2 vols.; 3rd ed.; Oxford: Clarendon Press 1892; combined vol., Dover Publications, 1954), Article 619.
2. A. M. Bork deals with the symmetry theory of the genesis of the $$\dot D$$ term in ?Maxwell, Displacement Current and Symmetry?, American Journal of Physics, XXXI (Nov. 1963), 854?59. I owe to him the example of Norman Campbell's statement of the theory, in section 2. An especially insightful discussion of the symmetries to be found in the two forms in which Maxwell presents his equations is contained in C. W. F. Everitt's forthcoming book on Maxwell's life and scientific work.
3. See, for example, Leigh Page & Norman Isley Adams, Jr., Principles of Electricity (2nd. ed.; New York: Van Nostrand, 1949), 547?48.
4. Scientific Papers, I. 451?513.
5. Notes on Recent Researches in Electricity and Magnetism (Oxford: Clarendon Press, 1893), vii.