"A Dynamical Theory of the Electromagnetic Field", published in 1865, is the third of James Clerk Maxwell's papers on electromagnetism, and the paper in which the original set of four Maxwell's equations first appeared. Maxwell's classic is organized as follows: Part I. Introductory Part II. On Electromagnetic Induction Part III. General Equations of the Electromagnetic Field Part IV. Mechanical Actions in the Field Part V. Theory of Condensers Part VI. Electromagnetic Theory of Light Part VII. Calculation of the Coefficients of Electromagnetic Induction