Professor Cranmer found that occasionally small quantities of ice form in caves in the summer months: this was in mountain caves, where there was snow on the mountains and the temperature of the nights at least, had sunk below freezing point: in fact when the conditions were those of the winter months. PART V. LIST OF AUTHORS. LIST OF AUTHORS.[75] [75] This list of authors includes all the authorities which I have personally consulted. Several papers, such as Dr. Schwalbe's "_Uebersichtliche Zusammenstellung Literarischer Notizen ueber Eishöhlen_" and the works of Dr. Listoff, I have been unable to find in any library. Allen, Levi. _Scientific American, New Series_, October 27th, 1883, page 259. _American Journal of Science and Arts_, 1839, vol. XXXVI., page 184. Auchincloss, W. S., C. E. _Waters within the Earth and the Laws of Rainflow_, Philadelphia, 1897. Badin, Adolphe. _Grottes et Cavernes_, Paris, Hachette, 1867. Baedeker, Karl. _Handbook of Austria._ _Handbook of the Eastern Alps._ _Handbook of South Eastern France._ _Handbook of Switzerland._ _Handbook of the United States._ Baker, M. S. _The Lava Region of Northern California: Sierra Club Bulletin_, San Francisco, Cal., 1899, vol. II., page 318. Balch, Edwin Swift. _Ice Caves and the Causes of Subterranean Ice_: Allen, Lane & Scott, Philadelphia, November, 1896, and _The Journal of the Franklin Institute_, Philadelphia, March, 1897, vol. CXLIII., pages 161-178. _Ice Cave Hunting in Central Europe: Appalachia_, Boston, 1897, vol. VIII., pages 203-209. _Subterranean Ice Deposits in America: Journal of the Franklin Institute_, Philadelphia, April, 1899, vol. CXLVII., pages 286-297. Baltzer, Dr. A. _Eine Neue Eishöhle im Berner Oberland: Jahrbuch des Schweizer Alpen Club_, Bern, 1892-1893, pages 358-362. Behrens, Dr. Georg Henning. _Hercynia Curiosa_, Nordhausen, 1703. Bel, Matthias. _Philosophical Transactions_, London, 1739, vol. XLI., page 41 _et seq._ Benedict, Aiden S. _Decorah Republican_, June 19th, 1881. Berthoud, Edward L. _American Journal of Science and Arts_, Third Series, 1876, vol. XI., page 108. Bielz, E. Albert. _Siebenbürgen, Handbuch_, Carl Graeser, Wien, 1885. Billerez, Mons. de. _Histoire de l'Académie Royale des Sciences_, 1712, page 22 _et seq._ Bonney, T. G. _The Alpine Regions, 1868._ _Nature_, vol. XI., pages 310, 327, 328. Boué, Dr. Ami. _La Turquie d'Europe_, Paris, 1840, vol. I., page 132. _Sitzungsbericht der K. K. Akademie der Wissenschaften in Wien_, 1864, I. Theil, page 321 _et seq._ Boz, Mons. de, Ingénieur du Roy. _Histoire de l'Académie Royale des Sciences_, 1726, pages 16, 17. Browne, The Reverend G. F. _Ice Caves in France and Switzerland_, London, Longmans, 1865. _Ice Caves of Annecy: Good Words_, Edinburgh, November, 1866.