VIII 



Inhalt. 



Seite 



Historische Geologie. 

 Allgemeines. 



Diener, C. : Die Bedeutung der Zonengliederung für die Frage 



der Zeitmessung in der Erdgeschichte (L) -78- 



Zehnder, L. : Ueber die Ursachen der geologischen Epochen (L) -78- 

 Harrassowitz, H. L. F. : Die Kliinate und ihre geologische 



Bedeutung (L) -78- 



Shaw, E. W. : Present Tendencies in Geology : Sedimentation (L) -78- 

 Bucher, W. H.: Ripples and related Sedinientary Surface Forms 



and their Paleographic Interpretations (L) -78- 



A r 1 d t , Th : Handbach der Paläogeographie. Bd. 1 : Paläakto- 



logie (L) -78- 



Holtedahl, 0.: Paleogeography and Diastrophism in the Atlantic- 



Arctic Kegion dnring Paleozoic Time (L) -78- 



Garrigou, F. : Sur l'anciennete et le mode de formation de 



l'eau ä la surface de la terre (L) -78- 



W e i g e 1 1, J. : Geologie und Nordseefauna (L) -78- 



H ö g b o m , A. G. : Ueber das arktische Element in der aralo- 



kaspischen Fauna, eine tiergeographische Studie (L) -78- 



Präcambrische Formationen. 



Miller, W. G. and C. W. K n i g h t : Revision of Pre-Cambrian 



Classification in Ontario -79- 



Allen, R. C. and L. P. Barrett: A Revision of the Se- 

 quence and Structure of the Pre Keweenawan Formations of 

 the Eastern Gogebic Iron Range of Michigan -79- 



Leith, C. K. and R. C. Allen: Discussion of Correlation -79- 



A 1 1 e n , R. C. : A Revision of the Correlation of the Huronian 



Group of Michigan and the Lake Superior Region ..... -81- 



Leith, C. K.: Arguments for Retaining the Present Correlation -81- 



Steidtmann, E: Summaries of Pre-Cambrian Literatnre of 



North America for 1909, 1910, 1911, and Part of 191-' (I— VI) -82- 



W i 1 k m a n , W. W. : Om en prekalevisk Kvartsitformation i norra 



delen af Kuopio Socken (L) -82- 



M ä k i n e n , E. : Oeversikt av de prekambriska Bildningarna i 



mellersta Oesterbotten i Finland (L) -82- 



Lane, A. C. : Lawson's Correlation of the Pre-Cambrian Era (L) -82- 



Co oke, H. C. : Some stratigraphical and structural features of 



the Pre-Cambrian of Northern Quebec (L) -82- 



Grout, Fr. F. and T. M. Broderick: Organic Structures in the 

 Biwabik Ironbearing Formation of the Huronian in Minne- 

 sota (L) -82- 



Twenhofel, W. H. and F. T. Thedaits: The palaeozoic section 



of the Tomah and Sparta Quadrangles (L) ........ -82- 



Cambrische Formation. 



Walcott, Ch. D : Relations between the Cambrian and Pre- 

 Cambrian formations in the vicinity of Helena, Montana (L) -82- 

 Schuchert, C. : The Cambrian ot the Grand Canyon of Arizona (L) -82- 

 Mansuy, H. : Faunes cambriennes du Haut-Tonkin (L) .... -82- 



