Among articles to appear in 

 early numbers of the Journal 

 of Geology are the following: 



Significant Ameliorations of Present Arctic 

 Climates. By T. C. CHAMBERLIN. 



The Physical Chemistry of the Crystalliza- 

 tion and Magmatic Differentiation of 

 Igneous Rocks. VIII. By J. H. L. 

 VOGT. 



The Mineralography of the Feldspars. 

 Part II (Concluded) By HAROLD L. 



Alling. 



The Temporary Mississippi River. By 



Walter H. Schoewe. 



Summary of the Geology of the Beartooth 

 Mountains, Montana. By ARTHUR 



Bevan. 



IVas there Pennsylvanian-Permian Glaci- 

 ation in the A rbuckle and Wichita Moun- 

 tains of Oklahoma ? By SAMUEL 



Weidman. 



