Friedrich Engels (German pronunciation: [ˈfʁiːdʁɪç ˈɛŋəls]; 28 November 1820 – 5 August 1895) was a German social scientist, author, political theorist, philosopher, and father of communist theory, alongside Karl Marx. Together they produced The Communist Manifesto in 1848. Engels also edited the second and third volumes of Das Kapital after Marx's death.
Introduction.--Dialectics.--Basic forms of motion.--The measure of motion--work.--Heat.--Electricity.--Dialectics of nature--notes.--Tidal friction, Kant and Thomson-Tait on the rotation of the earth and lunar attraction.--The part played by labour in the transition from ape to man.--Natural science and the spirit world [from a manuscript of Engels probably written in 1878, and first published in the "Illustrierter neue welt-kalender fèur das jahr 1898"]--Appendices: I. Notes to Anti-Dèuhring, hitherto unpublished in English. II. Source references (p. 329-370).--Bibliography (p. 371-375)--Index.