Among articles to appear in 

 early numbers of the Journal 

 of Geology are the following: 



Notes on Principles of Oil Accumulation. By A. W. McCoy. 

 Discussed by Chester W. Washburne. 



Diastrophism and the Formative Processes. XL Selective Aggre- 

 gation of Material in the Formation of the Earth and Its 

 Neighbors. XII. The Physical States of the Earth during 

 Its Formative Stages. By T. C. Chamberlin. 



(Two of a group of three papers to appear in successive numbers.) 



The fundamental nature of Professor Chamberlin's recent cosmological studies is 



indicated by the titles of these articles. 



Compilation and Composition of Bituminous Coals. By Reinhardt 

 Thiessen. 



Dr. Thiessen has studied bituminous coals in great detail, and his article will be of 

 great value to readers interested in his subject. 



The Origin of Gumhotil By George F. Kay and J. Newton 

 Pearce. 



The authors present a satisfactory explanation of the origin of the gumbos 

 associated with glacial drift. 



Geological Setting of New Mexico. By C. R. Keyes. 



Paleozoic Diastrophics of the Northern Mexican Tableland. By 

 C. R. Keyes. . 



Slides in the Conemaugh Formation near Morgantown, West 

 Virginia. By Earl R. Scheefel. 



Factors Producing Columnar Structure in Lavas and Its Occurrence 

 Near Melbourne, Australia. By Albert V. G. James. 



