pumices

The upper _Piton_ is unfitted for retaining water, which must percolate through its cinders, pumices, and loose matter into many a reservoir formed by blowing-holes.

To the Gold Coast for Gold A Personal Narrative in Two Volumes.—Volume I Richard Francis Burton 1855

Rhine should produce so soft and charming a liquor, as does the same vine, planted among the rocks and pumices of the so remote and mountainous Canaries?

Sylva, Vol. 1 (of 2) Or A Discourse of Forest Trees John Evelyn 1663

Tnc fiirurc of the pores in pumices that have flow, d, is usually more: or Jess oblon;;. uherciVs in the pumices of I'elicuda (I mean th. e cellular) the pores are almost aluap orbicular.

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812

The transition from glass less per - fect to perfect, may be perceived in some of these pumices in a very evident manner.

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812

It cannot be alliged that the lire of our furnaces i, too strong to induce that slight degree of vitrification which chancterizes pumices; since, w hen I lia\ e used a more moderate fire, the substances on u hich I made my exjjcriments ha\e eidier not melted, or been more or less vitrified.

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812

It is not uncommon to find at Solfatara pumices of various species; and it is more probable that they have been thrown out of this volcano than from any of the others.

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812

But to render complete my inquiries relative to the pumices of Campo Bianco, it Mas necessary that I should not confine my researches merely to the part of the - mouniaiu

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812

Not that it is not a true glass; but it is so light, that, like manv pumicts, it will swim in watir, and possesses that fragility which a. lways ac companies pumices.

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812

We have now finished the description of the volcanic products of Stromboli; I mean the sand, scoriae, lavas, tufaS; pumices, and specular iron.

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812

Sage, that they are lUaig leeous scorut; for, with respect to the former, wc have seen that pumices are not lu a state ol calcina - tion, but of vitrification; and with regard to the latter, inspection alone is sunicienl to shew the essential diflerence between pumices and scoriiu.

A General collection of the best and most interesting voyages and travels in all parts of the world [microform] : many of which are now first translated into English : digested on a new plan 1812