In that same year, 1881, Zola republished in book form most of the biographical and literary papers which he had written of recent years. "Le Roman Expérimental" had led the way in 1880, and now there came four more volumes: first "Les Romanciers Naturalistes,"[34] a series of papers on Balzac, Stendhal, Flaubert, Daudet, and the Goncourts, to which was added the much discussed review of contemporary novelists; secondly, "Documents Littéraires: Études et Portraits,"[35] in which will be found papers on Chateaubriand, Hugo, Musset, Gautier, George Sand, Dumas _fils_, Ste.-Beuve, contemporary poets such as Leconte de Lisle, Baudelaire, Banville, Catulle Mendès, Dierx, Anatole France, Mallarmé, Hérédia, Coppée, Bouchor, Richepin, and Sully-Prudhomme; and critics such as Taine, Pontmartin, Levallois, Babou, Barbey d'Aurévilly, and Sarcey, with some curious notes on Buloz, the founder of the famous "Revue des Deux-Mondes." Next there came "Le Naturalisme au Théâtre," divided into two sections, theory and example; the former including papers on the special gift alleged to be necessary in all writers for the stage, on acting, costumes, scenery, government subventions, etc.; and the latter running through the whole scale of the playwright's art, tragedy, drama, comedy, vaudeville and pantomime, with selections from the many articles which Zola had written as a dramatic critic between 1876 and 1880. Finally there was a fourth volume entitled, "Nos Auteurs Dramatiques," in which plays by Hugo, Augier, Dumas _fils_, Sardou, Labiche, Halévy, Gondinet, Pailleron, D'Ennery, Barrière, Feuillet, and others, were analysed and discussed.[36] To some of the theories set forth in those four volumes it may be necessary to refer when we survey Zola's work generally. The books have been mentioned here because they were issued at the period we have now reached, and because it is advisable that the reader should realise how energetic, how zealous Zola always was, how great was his versatility, and how strenuous his life. This man who subsequently preached the gospel of work had practised it unremittingly since the day he emerged from Bohemia. Fortune might frown or success might come, he did not alter in his industrious habits. In spite of every rebuff, every attack, he continued striving undauntedly, even as his father had striven before him. He was a living example of the axiom that life is a battle. He fought for his ideas, his principles, without a pause, until his last hour. [1] £360 = about $1,800.