August Christoph Carl Vogt (; 5 July 18175 May 1895) was a German scientist, philosopher, popularizer of science, and politician who emigrated to Switzerland. Vogt published a number of notable works on zoology, geology and physiology. All his life he was engaged in politics, in the German Frankfurt Parliament of 1848–49 and later in Switzerland. Early life Vogt was born in Giessen, the son of , professor of clinics, and Louise Follenius. His maternal uncle was Charles Follen. From 1833 to 1836, he studied medicine at the University of Giessen, and continued his training in Berne, Switzerland, earning his PhD. in 1839. He then worked with Louis Agassiz in Neuchâtel. Career In 1847 he became professor of zoology at the University of Giessen, and in 1852 professor of geology and afterwards also of zoology at the University of Geneva. His earlier publications were on zoology. He dealt with the Amphibia (1839), Reptiles (1840), with Mollusca and Crustacea (1845) and more generally with the invertebrate fauna of the Mediterranean (1854). In 1842, during his time with Louis Agassiz, he discovered the mechanism of apoptosis, the programmed cell death, while studying the development of the tadpole of the midwife toad (Alytes obstetricans). Charles Darwin mentions Vogt's support for the theory of evolution in the introduction to his The Descent of Man, and Selection in Relation to Sex (1871). Vogt was a proponent of scientific materialism and atheism, eager to engage in public debates with philosophical and scientific opponents, such as in his work Köhlerglaube und Wissenschaft of 1855, which was reprinted four times the same year. Vogt defended the theory of polygenist evolution; he rejected the monogenist beliefs of most Darwinists and instead believed that each race had evolved from a different type of ape. He wrote the White race was a separate species from Negroes. In Chapter VII of his Lectures on Man (1864), he compared the Negro to the White race and described them as “two extreme human types”. The differences between them, he claimed, are greater than those between two species of ape; and this proved that Negroes are a separate species from Whites. He was elected as a member to the American Philosophical Society in 1869. He died in Geneva at the age of 77. Politics Vogt was active in German politics and was a left-wing representative in the Frankfurt Parliament. Karl Marx scathingly replied to attacks by