File of Royal Society executive secretary 'Etna Research Sub-committee C' Correspondence regarding the business of the Royal Society's Etna Research Sub-committee, equipment for research, and a copy of report 'On A New Eruption On Mount Etna, Sicily'. Correspondents include: J E Guest, E A Vincent, D C Martin, M Dodderidge, A T Huntingdon, R G Mason, D K Bailey, A Mayer, C Argent, P E Baker, J D Bell. 1973-1974