French Federation of Speleology 10 years, named the "Bulletin of the CNS". Simultaneously, the SSF ceased publication of its periodical bulletin to provide its official information bulletin in the new "CNS". From 1952, cave training courses were organised in partnership with the Ministry of Youth Affairs and Sports. From 1953, Guy Lavaur organised cave diving activities. In conjunction with the Fédération nationale de sauvetage (National Rescue Federation), a certificate of first degree fitness was created in 1954. The first International Congress of Speleology was held in Paris from 7–12 September 1953 under the patronage of the Minister of National Education, as well as the
Society for the Promotion of the Physical Exploration of the Dutch Colonies number of famous classical and exploration trips to, among other Borneo and Dutch New Guinea were developed by and under the auspices of the Society and the Indian Committee for Scientific Investigations, a sister organisation in Batavia, Dutch East Indies. Society for the Promotion of the Physical Exploration of the Dutch Colonies The Society for the Promotion of the Physical Exploration of the Dutch Colonies (Dutch: Maatschappij ter Bevordering van het Natuurkundig Onderzoek der Nederlandsche Koloniën) was founded on 14 May 1890 in Amsterdam, with the mission of increasing the knowledge of the botany of the Dutch colonies. This knowledge