1878:
Engels writes "Natural Science in the Spirit World", an article which he later incorporated in "Dialects of Nature".

March, American "Labor Standard" publishes "Working Men of Europe in 1877", a series of articles by Engels, examining the working-class movement in European countries.

September 12, Engels' wife, Lizzie Burns, deceased.

Oct. 19, to suppress the working-class and socialist movement in Germany, Bismarck's government set up provocations and gets Reichstag to enact an Exceptional Law against the Harmful and dangerous Aspirations of Social-Democracy (better known as Anti-Socialist Law).


1879:
Sept. 17-18, Marx and Engels write a Circular Letter to August Bebel, Wilhelm Liebknecht, Wilhelm Bracke and other social-democratic leaders in Germany, criticizing opportunism and any conciliation with it.

Sept. 28, a pilot issue of "Der Sozialdemokrat", the central organ of German Social-Democracy, appears underground in Zurich. Marx and Engels contribute to the newspaper.


1880:
January-March, to propagate the ideas of scientific socialism in France, at the request of French socialist Paul Lafargue, Engels rewrites three chapters of Anti-Duhring, producing a treatise in its own right, which appears in Lafargue's French translation in "La Revue Socialist", Paris, March 20, April 20 and May 5, and then as a separate pamphlet under the title "Socialisme Utopique et Socialisme Scientifique".

End of February, Engels writes an article, "Herr Bismarck's Socialism", for "Egalite", the newspaper of French Workers' Party

Early May, in London, Marx and Engels meet Jules Guesde and Paul Lafargue to discuss the program of French Workers' Party. Drawn up with the aid of Marx and Engels, the program was adopted in Havre Congress, November.


1881 to 1882:
Engels studies the history of Germany, collects requisites material and writes two treatises, "Concerning the History of Ancient Germans" and "Frankish Period".

March 21, Marx and Engels send greetings to Slav meeting, held in London, on the 10th anniversary of Paris Commune.

May-August, Engels writes for "Labor Standard", a daily of English trade unions published in London. Contributing 12 articles, Engels tries to lay the ground for socialist propaganda in English working-class movement.

Dec. 2, Jenny, Karl Marx' wife, deceased. Engels writes an obituary for "Sozialdemokrat"; it was published on December 8.

Manifesto
Berlin, 1840