356 



THE GEOLOGIST. 



6. — The phenomena (which, it has been said, were more 

 general in former times than at present), were not confined 

 to the Alps alone, but extended over a great portion of 

 central and northern Europe. 



This statement extracted from a letter addressed by M. 

 StudeT to MM. Leonhard and Bronn, explains in the few^est 

 words, and with the greatest accuracy of any we have yet 

 met with, the whole basis of Agassiz's glacial theory, the 

 joint result of extensive observation, made both by that 

 gentleman and M. Charpentier, Forbes, Heath, Escher, 

 Mousson, Martins, and Bravais ; we will not, therefore, offer 

 other reasons for inserting it in this place. Lastly we will 

 remark that our second volume, commencing with January 

 1 843, will be conducted upon the same system as that of 

 this year, which we trust will have been proved a true and 

 faithful record of all investigations connected with Geology. 



THE EDITOR. 



ORIGINAL COMMUNICATIONS. 



On the variation of inclination of the highest limit of the 

 Erratic Zone, and their comparison with the inclination of 

 glaciers and water courses, by M. Elie de Beaumont, 



The interesting labours to which the phenomena of erratic 

 blocks, as exemplified in the Alps, have given rise during the 

 last few years, have contributed to elicit an important circum- 

 stance relating thereto. The traces left by erratic phenomena 

 rarely extend to the summits of mountains, they are confined 

 within a zone around their base, and which is within an alti- 

 tude already well known. This highest limit is oftentimes 

 marked, either by the transition of rounded into angularly- 



