ANTS — ARKANSAS 7 



Page 



Ants as agents of rock decay 7, 295 



Apatite region of Ottawa comity, Canada, Syenite-gneiss from 7, 95 



Appalachian baseleveling, Problem of 10, 273 



— corrugation, Southwestern extension of 2, 231 



— erosion. Some stages of 7, 519 



— Mountain Club, cited on Mount Rainier reserve 6, 14 



— region. Configuration of the 2, 558 



Appalachians, Baselevels in tlie 8, 222 



— , Crystalline rocks of the 2, 216 



— , Method of surveying in the 2, 180 



— , Overthrust faults of the 2, 141 



Aporhyolite of South mountain, Pennsylvania; Florence Bascom 8, 39 



Appomattox formation, Description of the 2, 445 



in the Mississippi embayment ; W J McGee 2, 2 



, Southern extension of 1, 546 



Arabian Gulf sliores. Reference to oscillations of 6, 67 



Arboles mountains, Lower Cretaceous rocks in 6, 379 



Akcestes californiensis, Naming of species 3, 398 



Archean axis. Relation of Coastal Plain moraiue to 6, 5 



— rocks, Internal relations and taxonomy of the , 1, 175 



of Canada .5, 102, 103, 357, 362 



, Economic geology of 4, 347, 348 



Connecticut valley 7,511,512 



New York, Thickness of , 4, 118 



northwestern plains 6, 19, 20 



the Sierra Nevada 3, 424 



western Ontario 9, 224 



or " Basement Complex " ... 5, 102 



, Pre- Paleozoic surface of. 1, 163 



west of lake Superior ; W. H. C. Smith 4, 333 



— studies. Results of 1, 357 



Archean-Cambrian contact near Manitou, Colorado; W. O; Crosby 10, 141 



Arctic shores, Evidences of subsidence of 6, 158 



Arduino, , cited on Lavina carbonates 6, 189 



Areal geology, Field notes for 2, 177 



Argall, Philip, Election of 8, 1 , 360 



Arizona, Butte fault in 1, 50 



— , Fossils from the Grand Canyon series of 10, 232 



— , Grand Canyon series in 10, 215 



— , Sheetflood erosion in 8, 88 



— , Sunset butte (an example of the cinder butte) in 6, 342 



— , Triassic of 3, 25 



Arkansas anthracite coal 5, 45 



— , Appomattox formation in 2, 3 



— , Comanche series in 2, 503 



— , Cretaceous fossils of 5, 304, 305, 321, 322, 325-331, 333 



— , Deformations in 5, 234 



— , Eleolite-syenite of 3, 83 



