SCIENTIFIC RESEARCHES. 229 



Gnyot, Forbes, aiid many other observers, and now forming an 

 established part of the general domain of science*. 



* The first paper by Charpentier on glaciers appeared in the 'Annales 

 des Mines,' vol. viii., and in the ' Mittheilungen aus dem Gebiete der theo- 

 retischeu Erdkunde/ von Julius Frobel und Osw. Heer, Zurich, 1830, pp. 482 

 et seqq., under the following title : " Anzeige eines der wichtigsten Ergeb- 

 nisse der Untersuchungen des Herrn Venetz liber den gegenwartigeu uud 

 friiheren Zustand der Wallisergletscher," read at Lucerne before the Swiss 

 Society of Natural Sciences in 1834. Since that time the question of glaciers 

 has given rise to an abundant literature. Among the principal works we 

 may cite : J. de Charpentier, { Essai sur les Glaciers et sur le terrain erratique 

 du Bassin du Rhone/ Lausanne, 1841 ; and L. Agassiz, < Etudes sur les 

 (limners,' Neuchatel, 1840. Prof. Mousson has published a most leiirned 

 work which sums up the investigations made upon existing glaciers, ' Die 

 < iletscher der Jetztzeit, eine Zusammenstellung uud Pruning ihrer Erschei- 

 nuugen und Gesetze,' Zurich, 1854. 



