Among articles to appear in early 

 numbers of the Journal of Geology 

 are the following: 



A New Occurrence of Crystobalite in California. By Austin F. 

 Rogers. 



Fault Features of Saltan Basin, California. By John S. Brown. 



A Criticism of the "Faunal Relationships of the Meganos Group," 

 by Bruce L. Clark- By RoY E. Dickerson. 



Former Courses of the A ndroscoggin R iver. By Irving B . Crosby. 



Notes on the Sand Dunes of Northwestern Indiana. By George B. 

 Cressey. 



Marine Upper Cretaceous and a New Echinocorys from the Alta- 

 planicie of Bolivia. Edward W. Berry. 



Post-glacial Lakes in the Mackenzie River Basin, Northwest 

 Territories, Canada. By A. E. Cameron. 



The Occurrence of an Apus in the Permian of Oklahoma. By 



RUDOLE RUEDEMANN. 



On Contact Phenomena between Gneiss and Limestone in Western 

 Massachusettes. By Pentti Eskola. 



The Early Pre-Cambrian Formations of Northern Ontario and 

 Northern Manitoba. By E. L. Bruce. 



The Reaction Principle in Petrogenesis. By N. L. Bowen, 



An Outline of the Physiographic History of Northeastern Ontario. 

 By W. H. Collins. 



Dinosaur Tracks in Hamilton County, Texas. By W. E. Wrather. 



