XXV111 RECENT PROGRESS OF THE GLACIER THEORY. 



PAPERS ON GLACIERS NOT INCLUDED IN THIS VOLUME. 



1842. The Glacier Theory. Edinburgh Review for April 1842. 



[I at first intended to reprint this article in the present 

 volume. But I found that it would ill accord with the character 

 of the other contents. Being based, so far as the physics of 

 glaciers are concerned, on the rude and imperfect data which 

 alone existed in 1841 when it was written, its speculations and 

 its questionings are already in a great measure obsolete, and 

 would have served no other purpose but to show the great advance 

 which the subject has since made. The longest part of the 

 article was upon the geological aspect of glaciers, one hardly 

 touched upon from the succeeding papers of the volume. Alto- 

 gether it seemed to me that, though historically not without 

 interest, yet its insertion would distract the attention of the 

 reader from the main purposes of this publication. Some of 

 the more popular and descriptive parts of the article were re- 

 printed as an introduction to the abridged edition of my Travels.* 

 The paper in the Edinburgh Review was translated into French, 

 and printed entire in the Annales de Chimie, under the direction 

 of M. Arago.] 



1843. Historical Remarks on the Discovery of the true Structure 

 of Glacier Ice. Edin. New Phil. Journal, Jan. 1843. 



1843. Three papers on Glaciers. Proceedings of the Royal 

 Society of Edinburgh. Read 6th and 27th February, and 

 20th March 1843. 



[These papers contain the substance of some of the chapters 

 of the Travels in the Alps, then in preparation. The third con- 

 tains the first description of the plastic models, with illustrative 



* Tour of Mont Blanc and of Monte Rosa. A. and C. Black. 12mo. 1855. 



