|BGS image ID: P640525|
Description below image reads: Instantaneous photo of same subject as Nos 8 and 9. taken with a narrow-angle lens at the moment of an explosion of vapour, stones and ash. August 7th 1886.
Johnston Lavis was born in 1856 and died in 1914. Educated at University College, London, he was Professor of Volcanology at the Royal University of Naples. He produced a map of Vesuvius in 1891.