Harpo Marx painted "his" portrait. In 1955, Harpo made an appearance on the sitcom "I Love Lucy," in which he and Lucille Ball re-enacted the famous mirror scene from the Marx Brothers movie "Duck Soup" (1933). In this scene, they are both supposed to be Harpo, not Groucho; he stays the same and she is dressed as him. About this time, he also appeared on NBC's "The Martha Raye Show". Harpo recorded an album of harp music for RCA Victor ("Harp by Harpo", 1952) and two for Mercury Records ("Harpo in Hi-Fi", 1957; "Harpo at Work", 1958). Harpo and Chico played a
Influences on Karl Marx "when Darwin drew the conclusions from his research work and brought them to the knowledge of the public, we spoke of nothing else for months but Darwin and the enormous significance of his scientific discoveries". Historian Richard Weikart points out that Marx had started to attend "a series of lectures by Thomas Henry Huxley on evolution". In August 1866, Marx referred to Pierre Trémaux's "Origine et transformations de l'homme et des autres êtres" (1865) in another letter to Engels as "a very important advance over Darwin". He went further to claim that "in its historical and political application" the book