Sentence Examples


  • For efficiency the operation must be conducted with small quantities; caking may be prevented by mixing the substance with sand or powdered pumice, or, better, with iron filings, which also renders the decomposition more regular by increasing the conductivity of the mass.
  • In the centre of a pumice-covered plateau from loon to 2000 ft.
  • Pumice stone is also exported from Lipari (II,oio tons in 1904).
  • Broken as is the surface, poor as is the soil of certain tracts, there is but little of the island which will not ultimately be cultivated with profit as pumice and clay-marl yield to labour.
  • Millstones and pumice were also exported, but for the former the more gritty lava of Rocca Monfina was later on preferred.