Since the Second World War interest in the active by Italian geophysicists; studies of ground deform volcano Mount Etna, in Sicily, has been steadily ation by British and Italian groups; measurements increasing. This interest has not been restricted of microgravity changes particularly by a British to Italy, and scientists from Belgium, France, group; endeavours to improve analytical tech Germany, the United States and the United King niques for gases and sublimates by French and also dom have played a part in volcanological studies. Italian and British workers; pioneering work on In 1972...