The papers and articles included are: Foramen Centrale, Theory of Compound Colours, Poinsot's Theory, Address to the Mathematical, and Introductory Lecture. According to Wikipedia: "James Clerk Maxwell of Glenlair (13 June 1831 – 5 November 1879) was a Scottis physicist and mathematician. His most prominent achievement was formulating classical electromagnetic theory. This united all previously unrelated observations, experiments and equations of electricity, magnetism and even optics into a consistent theory.[3] Maxwell's equations demonstrated that electricity, magnetism and even light are all manifestations of the same phenomenon, namely the electromagnetic field. Subsequently, all other classic laws or equations of these disciplines became simplified cases of Maxwell's equations. Maxwell's achievements concerning electromagnetism have been called the "second great unification in physics”