The science of fuels is a comprehensive description of the chemical composition, extraction, and manufacture of all natural and artificial fuels, including solid, liquid, and gaseous types. It covers their internal combustion, evaporation, heating power, air consumption, and the most appropriate uses, along with studies of their calorific value. This information is intended for manufacturers, technicians, farmers, and merchants. Fuels are categorized into solid, liquid, and gaseous types based on various criteria, such as their physical state. A distinction is made between natural, refined, or synthetic fuels depending on their origin. Fuels can be organic, such as crude oil, natural gas, or coal, or inorganic, such as hydrogen or carbon monoxide. This is a reprint of the original edition from 1883.