 His period of greatest activity was between 1927 and the autumn of 1930; during these years he produced his most important works, such as "Still-life with a Bowler Hat" (1929) and "Still-life with a Feather" (1929).He exhibited in the Venice Biennale in 1930, and at the first Rome Quadriennale in 1931.In the last two years of his life, the tuberculosis from which he had suffered for years forced him to abandon painting in favor of drawing.