56 j\I. Charpentier on the Erratic ritcnumena of the North. 



giving in the Bihl'iothtque Univcrselle cle Geneve an acconnt of 

 my Essai sur les glaciers et le terrain erratiqne da bassin du 

 Rhone.* I there remarked with much satisfaction that you 

 have perused that work with attention, and have completely 

 understood the ideas which it was my intention to express. 

 In fact, I think it would he impossible to prepare a better ab- 

 stract than you have published of a work whicli, in some mea- 

 sure, is only a summary of observations. I therefore request 

 you to accept of my sincere thanks on this account, and also 

 for all the kind observations regarding me, which, on that oc- 

 casion, were dictated by your indulgent goodness. 



If all my readers had considered the subject with the same 

 attention and the same sagacity which you have brought to 



communications published previously to vol. xxs., but not included in our 

 former note : Vol. xviii. p. 303, Kldden on the Origin of the Erratic Blocks 

 of the North of Germany. Vol. xxiii. p. G9, Sefstrom on the Traces of a 

 vast Ancient Flood (On osars and JiUtcfiryttor). Vol. xxiv., p. 438, Von 

 Baer on the Transported Blocks of the South Coast of Finland. Vol. xxix. 

 p. 185, On the Origin of Fissures in Glaciers, and on Sefstrom's Investiga- 

 tions. Vol. XXX. pp. 160 and 284, Dr Martens on the Glaciers of Spitzbcr- 

 gen, compared with those of Switzerland and Norway ; p. 191, Dr Buckland 

 on the former existence of Glaciers in Scotland; p. 109, Mr Lyoll on the 

 Geological Evidence of the former existence of Glaciers in Forfarshire; 

 p. 202, Dr Buckland on the former existence of Glaciers in the North of 

 England. Vol. xxxi. p. 30, Dr Black on the Antediluvian Congelation of 

 the Interstitial Water of Eocks ; p. 50, Captain Vetch on Icebergs, &c. ; p. 

 77, M. Kenoir on the Traces of Ancient Glaciers in Duuphiny and in 

 Northern Russia ; p. 252, M. Robert on the Grooves and Furrows on the 

 Rocks of Scandinavia ; p. 253, M. Bohtlingk on the Traces of the last Re- 

 volution in Scandinavia. Vol. xxxii. p. 70, Professor Hitchcock on Glacial 

 Action, &c., in America ; p. 84, Professor Forbes on a Remarkable Struc- 

 ture observed by him in the Ice of Glaciers ; p. 103, M. Bohtlingk on the 

 Scratches and Furrows observed on the Rocks of Finland ; p. 291, M. 

 Desor's Account of an Ascent of the Jungfrau. Vol. xxxiii. p. 1, Sir G. 

 Mackenzie on an Hypothesis to account for the Origin of Glaciers ; p. 30, 

 Professor Bronn on the Glacier Theory of Agassiz ; p. 104, M. de Char- 

 pentier on the Glaciers and Erratic Formation of the Valley of the Rhone ; 

 p. 124, Mr Murchison on the Glacial Theory ; p. 101, M. Studer on the Di- 

 luvium and Erratic Blocks of Switzerland; p. 217, Professor Agassiz on 

 the Glacial Tlieory and its Recent Progress ; p. 338, Professor Forbes' Re- 

 cent Observations on Glaciers ; p. 352, Mr Darwin on the Ancient Glaciers 

 of Caernarvonshire ; p. 399, Professor Agassiz' Recent Observations on the 

 Glacier of the Aar. — Edit. 

 '•' Jameson's Journal, vol. xxxiii. p. 104. 



