vi CONTENTS OF VOLUME XII 



NUMBER III 



PAGE 



Ice-Retreat in Glacial Lake Neponset and in Southeastern Mas- 

 sachusetts. M. L. Fuller -------- i8i 



Relations of Gravel Deposits in the Northern Part of Glacial 



Lake Charles, Massachusetts. Frederick G. Clapp - - 198 



The Leopardite (Quartz Porphyry) of North Carolina. Thomas 



L. Watson ------ 215 



Quartz-Feldspar-Porphyry (Graniphyro Liparose-Alaskose) from 



Llano, Tex. Joseph P. Iddings - - - - - - - 225 



Crystosphenes, or Buried Sheets of Ice, in the Tundra of North- 

 ern America. J. B. Tyrrell -------- 232 



A Coal-Measure Forest Near Socorro, New Mexico. C. L. Herrick 237 



The Variations of Glaciers. IX. Harry Fielding Reid - - - 252 



Farewell Lecture by Professor Edward Suess on Resigning his 



Professorship. Translated by Charles Schuchert - - - 264 



Editorial. T. C. C. - - - - - - - - - - 276 



Reviews: Grundziige der Geologie des unteren Amazonasgebietes (des 

 Staates Para Brasilien), Dr. Friedrich Katzer (J. C. Branner), 278; 

 The Correlation of Geological Fauna: A Contribution to Devonian 

 Paleontology. Henry Shaler Williams (Stuart Weller), 279; The 

 Evolution of Earth Structure, T. Mellard Reade (W. H. E.), 280. 



NUMBER IV 



A Series of Gentle Folds on the Border of the Appalachian 



System. Edward M. Kindle ------- 281 



The Laramie and Fort Union Beds in North Dakota. Frank A. 



Wilder - 290 



Orbicular Gabbro-Diorite from Davie County. North Carolina. 



Thomas L. Watson - 294 



The Osteology of the Skull of the Pelycosaurian Genus, Dimet- 



rodon. E. C. Case - - 304 



On the Structure of the Fore Foot of Dimetrodon. E. C. Case 312 

 On the Pyroxenites of the Grenville Series in Ottawa County, 



Canada. C. H. Gordon 316 



A Typical Case of Stream-Capture in Michigan. Isaiah Bowman 326 

 The Deposition of the Carboniferous Formations of the North 



Slope of the Ozark Uplift. Sydney H. Ball - - - - 335 



EcLOGiTES in California. Ruliff S. Holway 344 



Editorial ----- - - -^^g 



Reviews: Catalogue of the Ward-Coonley Collection of Meteorites, 



Henry A. Ward, 360. 



