Alfredo Magalhães Ramalho’s scientific correspondence: historical connections between oceanography and marine biology from Portugal (1919–1949)

This article presents Alfredo Magalhães Ramalho’s scientific correspondence between 1919 and 1949, both nationally and internationally. It consists of 181 unpublished letters, exchanged with 30 relevant figures belonging to 11 countries, including France, the UK, Croatia, Japan, Germany, Canada, Sweden, Norway, Morocco, Belgium and Spain. This correspondence shows a network among different research institutions devoted to the marine sciences. This includes biological stations, such as the Istituto Italo-Germanico di Biologia Marina, laboratories and museums, e. g. the British Museum of Natural History. At the national level, the correspondence between Ramalho and Augusto Nobre represents a historical axis between Lisbon and Porto, involving two of the most relevant scientists in the fields of oceanography and marine biology. At the international level, Ramalho corresponded with personalities such as Henry Gascoyne Maurice and other members of the International Council for the Exploration of the Sea, including for example the oceanographer Vagn Walfrid Ekman. This correspondence represents an archival discovery of the Portuguese Institute for Sea and Atmosphere in Lisbon, marking a decisive historical scientific moment for both Portuguese and international contexts in the field of marine sciences. This article aims to reconstruct Portugal’s internal and external networks.