Agafonov Valerian Konstantinovich (1863-1955) – a writer, soil scientist, public and political figure, an emigrant. He graduated from the Natural Department of the Physics and Mathematics Faculty of St. Petersburg University (1889). He worked in the mineralogical cabinet of the university. Since 1903 he taught at the University of St. Petersburg. An active participant in revolutionary activity, a member of the Socialist-Revolutionary Party. Since 1906, in the first emigration, he returned to Russia in 1917. Chairman of the Paris Committee on the dispatch of political emigrants to Russia, an officer... of the authorized chairman of the Extraordinary Investigation Commission for the management of the archives of foreign agents in Paris (after February 1917). Author of the book “Foreign secret police” (1918). Since 1921 in the second emigration. He lived in France and worked at the French Institute of Agronomical Research. Participant of expeditions in Africa and South America. Author of books: “Science and Life” (1906), “Earthquake” (1915), “The Present and the Past of the Earth” (1926), “Volcanoes” (1917), etc. Member of the French Geological and French Mineralogical Societies, science of soils.