The Drachenhoehle (Murray, 1. c.p. 553), a series of caverns not far from Neusohl in Hungary, afford another instance of an ice-cave, one of the largest of them being said to be coated with a sheet of translucid ice, through which the stalactitic fretwork of the vault is seen to great advantage.]

[Footnote 99:  Not far from Kaschau.]

[Footnote 100:  Travels in Hungary, 1797, pp. 317, &c.]

[Footnote 101:  A Peep into Toorkistan; London, 1846; chapters x. and xi.]

[Footnote 102:  They were now in a country far removed from the Affghans, and hostile to that people.]

[Footnote 103:  The remainder of this paragraph is in Captain Burslem’s own words.]

[Footnote 104:  I am indebted for the knowledge of the existence of these caves to W.A.  Sandford, Esq., F.G.S., who informed me that an account of them was to be found in a book of travels by an English officer.  I am not aware that they have been visited on any other occasion than this.]

[Footnote 105:  Reise durch Island, Copenhagen, 1744 (being a German translation from the original Danish), i. 128 sqq.]

[Footnote 106:  Henderson’s Iceland, ii. 189 sqq.]

[Footnote 107:  Pp. 145 sqq.]

[Footnote 108:  The Sturlunga, Landnama, and Holmveria Sagas.]

[Footnote 109:  Two priests determined to solve the mystery of this unapproachable valley, the Aradal, or Thoris-thal, with its rich meadows and gigantic inhabitants, and made an expedition for this purpose in 1664.  They reached a point where the glaciers fell off into a valley so deep that they could not see whether there were meadows at the bottom or not, and the slope was so rapid that it was impossible to descend.]

[Footnote 110:  Voyage en Islande; Atlas Historique; t. ii., pl. 130-133.]

[Footnote 111:  Iceland:  its Scenes and Sagas:  pp. 97, 98.]

[Footnote 112:  Page 113.]

[Footnote 113:  Russia and the Ural Mountains, i. 186, sqq.]

[Footnote 114:  See the Papers read before the Geological Society of London, on March 9, 1842, by Sir John Herschel and Sir E. Murchison, the substance of which has been given above.

See also the Edinburgh Philosophical Journal for 1843 (xxxv. 191), for an attempt by Dr. Hope to explain the phenomena of this cave by a reference to the slow penetration of the winter and summer waves of cold and heat.  Dr. Hope believes that, although the external changes do not travel to any great depth, they reach far enough to communicate with some of the fissures leading to the cave.]

[Footnote 115:  Voyages (French translation); Paris, 1788; i. 364.]

[Footnote 116:  In the gypsum to the NE. of Kungur, on the banks of the Iren, there is a cave containing ice.  Four of its chambers have ice, in one of which a stalagmite of ice rises almost to the roof.  The farthest chamber, 625 fathoms from the entrance, contains a lake of water which stretches away out of sight under the low roof. (Taschenbuch fuer die gesammte Mineralogie; Leonhard, 1826; B. 2, S. 425.  Published as Zeitschrift fuer Mineralogie.)]