Much of his work in mathematical modelling of chemical processes can be thought of as early computational chemistry. In further work, published in book form as *Applications of dynamics to physics and chemistry* (1888), Thomson addressed the transformation of Energy in mathematical and theoretical terms, suggesting that all Energy might be kinetic. His next book, *Notes on recent researches in electricity and magnetism* (1893), built upon Maxwell's *Treatise upon electricity and magnetism*, and was sometimes referred to as "the third volume of Maxwell". In it, Thomson emphasized physical methods and experimentation and included extensive figures and diagrams of apparatus, including a number for the passage of electricity through gases. His third book, *Elements of the mathematical theory of electricity and magnetism* (1895) was a readable introduction to a wide variety of subjects, and achieved considerable popularity as a textbook.