Pumice and dust of Krakatoa mb-width 3495 'Westminster Hall

'Westminster Hall

At the end of December 1868

XXII from Micrographia: or some physiological descriptions of minute bodies made by magnifying glasses with observations and Inquiries thereupon

Skinners' Hall

View of Newgate Market in Paternoster Square

Pumice and dust of Krakatoa mb-width 3495 'Westminster HallSections 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