648 



INDEX 



Vol. Page 

 Process of Formation of Certain Quartzites T^, IV, 29 



Secular Decay of Granitic Rocks II, 27 



Synopsis of American Paleozoic Echinoids II, 178 



Opinions Concerning Age of Sioux Quartzite II, 218 



Note on the Nature of Cone-in-Cone Ill, 75 



Two Remarkable Cephalopods from the Upper Pale- 

 ozoic Ill, 76 



Stages of the Des Mcines, or Chief Coal-bearing 

 Series of Kansas and Southwest Missouri and 



their Equivalents in Iowa IV, 22 



Geographic Development of the Crimea V, 52 



Carboniferous Formations of the Ozark Region V. 55 



Some Geological Formations of the Cap-au-Gies Uplift V, 58 

 Some Physical Aspects of Geiieral Geological Corre- 

 lation V, 131 



Cuesta Topography of the Crimean Peninsula VI, 227 



Permian Rocks of Eastern Russia VI, 229 



Formational Synonomy of the Coal Measures of the 



Western Interior Basin VII, 82 



Terraces of the Nile Valley VII, 111 



Genesis of Normal Compound and Normal Horizontal 



Faulting VII, 112 



Deposition of Equivalent of Hiatus at Base of our Coal 

 Measures; and the Arkansan Series, A New Terrane 

 of Carboniferous in the Western Interior Basin. . . . VIII, 119 



Names of Coals West of the Mississippi River VIII, 128 



Volcanic Necks of Piatigorsk, Southern Russia VIII, 137 



Igneous Rocks of the Central Caucasus, and the Work 



of Loewinson-Lessing IX, 101 



Evidences of Recent Uprisings of the Shores of the 



Black Sea IX, 103 



A Devonian Hiatus in the Continental Interior — Its 



Character and Depositional Equivalents IX, 105 



Significance of the Occurrence of Minute Quantities 



of Metaliferous Minerals in Rocks X, 99 



Genesis of Certain Cherts X, 103 



Comparative Values of Different Methods of Geologic 



Correlation in the Mississippi Basin X, 105 



A Remarkable Occurrence of Aurichalcite XI, 253 



Certain Basin Features of the High Plateau Region 



of Southwestern United States XI, 254 



Notes on the Carboniferous Faunas of Mississippi Val- 

 ley in the Rocky Mountain Region XI, 258 



Dissection of Mountain Blocks in the Great Basin 



Region XII, 165 



Northward Extension of the Lake Valley Limestone . . XII, 169 



Geology of the Corinth Canal Zone XIII, 195 



Lime Creek Fauna in Southwestern United States and 



Northern Mexican Region XIII, 197 



