Pumice and dust of Krakatoa mb-width 3495 Barlow wears a dark frock

Barlow wears a dark frock coat over a lighter waistcoat and trousers

'Westminster Hall

Skinners' Hall

September 10

Whitechapel

Pumice and dust of Krakatoa mb-width 3495 Barlow wears a dark frockSections of Krakatoa pumice and volcanic dust at x50 and x250 magnifications. Krakatoa, the island in the Sunda Strait, Indonesia, erupted in catastrophic explosions on 27 August 1883. Figure 1. Sections of pumice from earlier period of the eruption (May 1883) at x50 magnification. Figure 2. Cross section of the same pumice x50 magnification. Figure 3. Common pumice of Krakatoa x50 magnification. Figure 4. Section of artificial pumice at x50