His collections "Czyhanie na Boga" ("In Lurking for God" (1918)), "Sokrates tańczący" ("Dancing Socrates" (1920)), "Siódma jesień" ("Seventh Autumn" (1922)), and "Wierszy tom czwarty" ("Poems, Volume Four" (1923)) are typical of his early work. In his later collections — "Słowa we krwi" ("Words in the Blood, 1926)"), "Rzecz Czarnoleska" ("The Czarnolas affair") (1929), "Biblia cygańska" ("The Gypsy Bible" (1933)) and "Treść gorejąca" ("A Burning Matter" (1933)) Tuwim became restless and bitter, and wrote with fervour and vehemence about the emptiness of urban existence. He also drew more heavily from the romantic and classicist traditions, while perfecting his form and style, and becoming a virtuoso wordsmith.