This is a much-needed reissue of the standard English translation of Hegel\'s Philosophy of Nature, originally published in 1970. The Philosophy of Nature is the second part of Hegel\'s Encyclopaedia of the Philosophical Sciences, all of which is now available in English from OUP (Part I being his Logic, Part III being his Philosophy of Mind). Hegel\'s aim in this work is to interpret the varied phenomena of Nature from the standpoint of a dialectical logic. Those who still think of Hegel as a merely a priori philosopher will here find abundant evidence that he was keenly interested in and very well informed about empirical science. The Philosophy of Nature is integral to his philosophical system and deserves the most serious attention. Students and scholars of Hegel and the history of European philosophy will welcome the availability of this important text, which also includes a translation of Hegel\'s Zusatze or lecture notes.