Summaries of Current North American Pre-Cambrian Litera- 

 ture. C. K. Leith ------.___ 



Reviews : West Virginia Geological Survey, by I. C. White (S. W.), 426. 

 Recent Publications ---------- 



som 



Season and Time Elements in Sand-Plain Formation. Myron L. 

 Fuller ---------•_.. 



iv CONTENTS OF VOLUME VII 



NUMBER III, 



PAGE 



The Variations of Glaciers. IV. Harry Fielding Reid - - - 217 



Nantucket, a Morainal Island. G. C. Curtis and J. B. Woodworth - 326 



Beach Cusps. Mark S. W. Jefferson ----.__ 237 



A Certain Type of Lake Formation in the Canadian Rocky 



Mountains. Walter D. Jefferson ----... 247 



The Piracy of the Yellowstone. John Paul Goode - 261 



The Fauna of the Devonian Formation at Milwaukee, Wiscon- 

 sin. Charles E. Monroe and Edgar E. Teller ----- 272 

 The Petrographical Province of Essex County, Mass. IV. Henry 



S. Washington ----- 284 



Editorial --.-.---..-... 2Q r 



Reviews : Experimental Investigation of the Formation of Minerals in an 

 Igneous Magma (J. A. Jaggar, Jr.), 300 ; Physical Geography of New 

 Jersey, by Rollin D. Salisbury (J. P. Goode), 314 ; Bulletin of the 

 American Museum of Natural History (W. T. Lee), 316. 

 Recent Publications - 3 T g 



NUMBER IV. 



American Homotaxial Equivalents of the Original Permian. C. 



R. Keyes ------------ o 2 i 



Correlation of Carboniferous Rocks of Nebraska with those of 



Kansas. C. S. Prosser --------- 342 



The Nebraska Permian. W. C. Knight. ------ 357 



The Diamond Field of the Great Lakes. W. H. Hobbs - - 375 



Replacement Ore Deposits in the Sierra Nevada. H. W. Turner 389 



Editorial - - - - - 



401 

 406 

 428 



NUMBER V. 



A New Analcite Rock from Lake Superior. A. P. Coleman - - 431 



CORUNDIFEROUS NEPHELINE-SYENITE FROM EASTERN ONTARIO. A. P. 



Coleman ------------ 



The Effect of Sea Barriers upon Ultimate Drainage. J. F. New- 



437 

 445 

 452 



