REVIEW OF OLD AND NEW STANDARDS OF PLEISTOCENE DIVISION 419 



moraines are the outermost, the most remote from the central Alpine 

 massif; they indicate the maximum of glacial extension in the Alpine 

 region. Deperet and Mayet observe (Mayet, 1921.2, page 181) that many 

 authors continue to regard the Mindelian moraines, which are the most 

 external on the periphery of the western Alps, as of Rissian age, an 

 erroneous conclusion of Penck and Bruckner. 



The First Inter glaciation is the Giinz-Mindel of Penck. 



First, or most ancient, Glacial Period 



(I) This period, the moraines of which are related to the origin of 

 the "cailloutis des plateaux ou graviers anciens des hauteurs' — that is, 

 the glacial pebbles of the plateaus, the ancient gravels of the heights, in 

 general 90 to 100 meters above the actual valley bottoms, is termed the 

 Gtinz or Giinzian by Penck, a name derived from another tributary of the 

 Danube between Ulm and Auo-sbour£\ The Giinz glaciation left but few 

 important traces, represented at the present time by scattered indica- 

 tions which are rarely found beyond the limits of the Alpine valleys. 

 Probably this glaciation was the least extensive. 



Conclusion 



In concluding this first summary of the observations of Deperet in 

 the peri-Alpine region, we may point out that it is chiefly a corroboration 

 and confirmation of the Penck-Briickner system. The principal differ- 

 ences relate to three points, namely : ( 1 ) the connection of the river 

 terrace levels with the marine terrace levels of the Mediterranean; (2) 

 the attribution of Mindelian age to certain moraines termed Rissian in 

 the Penck system; (3) the subdivision of the larger part of the Pleis- 

 tocene of Europe by means of four outstanding terrace levels, namely, 

 of 90-100 meters (Sicilian), of 55-60 meters (Milazzian), of 28-32 

 meters (Tyrrhenian), of 18-20 meters (Monastirian), on the theory 

 of marine transgression and regression. In other words, Deperet appears 

 to be the first to connect the peri- Alpine river terraces with the Mediter- 

 ranean sea terraces. The second summary is given on page 138 of the 

 present paper. 



3. LEVERETT'S COMPARISON OF NORTH AMERICAN AND EUROPEAN GLACIAL 



DEPOSITS 



The reader is referred to the June and July numbers of the Zeitschrift 

 fur Gletscherkunde, 1910 (Leverett, 1910.1) for a clear exposition of the 

 corresponding position and contemporaneity of the glacial deposits of Xorth 



