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During the Pleistocene there were very considerable glaciers in the 

 Wind River, Absaroka, Shoshone, Big Horn, and Medicine Bow 

 mountains, as well as in the Yellowstone Park. Glaciers also reached 

 the state line from the Uinta Mountains. No subdivisions of the gla- 

 cial period have been made out. 



The report is accompanied by an uncolored geological map, which 

 is, we believe, the first geological map of the state which has been 

 published. R..D. S 



Die vierte Eiszeit im Bereiclie der Alpen, von Albrecht Penck. 

 Vortrage des Vereines zur Verbreitung naturwissenschaft- 

 licher Kenntnisse in Wien. XXXIX. Jahrgang. Heft 3, 

 1899. 

 In this little pamphlet, as the title implies, Dr. Penck recognizes 

 four distinct epochs of glaciation (instead of three as heretofore) in the 

 Alps. The additional epoch which is here added belongs to the 

 earlier rather than to the later stage of the glacial period. The differ- 

 entiation of these several epochs is based primarily on the topographic 

 distribution of the deposits made by the waters which flowed from the 

 ice, the deposits of the several epochs being so disposed as to show 

 very considerable periods of erosion between the periods of fluvio- 

 glacial deposition. 



This paper is of interest in that it helps to bring the phenomena of 

 this somewhat isolated area of glaciation into still closer correspond- 

 ence with the phenomena of the greater areas of glaciation in north- 

 western Europe and North America. 



R. D. S. 



