Index to Volume XL 



Adams, Frank D. The Monteregian Hills — A Canadian Petrographical 



Province .--.--..--.. 239 



Age and Origin of Gypsum of Central Iowa. Frank A. Wilder . . . 723 



Antarctic Fossils, Stokes Collection of, Stuart Weller . . . . . 413 



Anticlmal Mountain Ridges in Central Washington. George Otis Smith - 166 



Arreola, Josd Maria. Observations of Colima - - - - - - 75i 



Arthropod Fauna of Illinois. Axel Leonard Melander - - - - - 178 



Authors' Abstracts : 



Age of Atlantosaurus Beds. Willis T. Lee ...-.- 107 



Ames Knob, Maine. Bailey Willis - - - - - - - 104 



Basal Conglomerate in Lehigh and Northampton Counties, Pa. Frederick 



B. Peck 108 



Basin Ranges of Utah and Nevada W. M. Davis - - - - - 120 



Blue Ridge in Southern Virginia and North Carolina. W. M. Davis. - 121 

 Correlation of the John Day and Mascall. John C. Merriam and Wm. J. 



Sinclair .-.-..------95 



Devonian and Carboniferous of Southv/estern New York. L. C. Glenn - 112 



Direction of Flow of Ancient Beaver River. R. R. Hice . . . 103 

 Faulting in the Crystalline Rocks of Southwestern New England. W. H. 



Hobbs --....------ 118 



Freshwater Tertiaries of Green River, Wyoming. W. M. Davis - - 120 



Genesis of Ore Deposits in Boulder County, Colo. Rufus M. Bagg, Jr. - 100 



Geological Age of West Indian Volcanic Formations. J. W. Spencer - 113 

 Geological Reconnoissance of Upper Main Walker River, Nevada. D. T. 



Smith ------------- 94 



Glacial Bowlders along Osage River, Mo. E. R. Buckley, S. H. Ball and 



• A. T. Smith ...-..--.-- 106 



Glacial Features of Lower Michigan. Frank Leverett - - - - 117 



Gypsum Deposits of Northwestern Nevada. Geo. D. Louderbock - - 99 



Hanging Valleys of Georgetown, Colo. W.O.Crosby - - - - 117 



History of Caribbean Islands from Petrographic Point of View. Persifor 



Frazer ------------ 126 



Marl Loess of Lower Wabash Valley. M. L. Fuller and F. G. Clapp - 116 



Mechanics of Igneous Intrusions. R. A. Daly . . - . - iqi 



Physiography and Geology of Siskiyou Range. F. M. Anderson - - 100 



Physiography of Southern Arizona and New Mexico. W. H. Fairbanks - 97 



Porphyritic Appearance. Alfred C. Lane - - - - - - 107 



Post-Glacial Time. A. H. Elftman ..--... 109 



Potter Creek Quaternary Bone Case. Wm. J. Sinclair - - - - 96 



Protection of Terraces in Upper Connecticut Valley. C. M. Hitchcock - 121 



791 



