INDEX. 



Page. 



Acadian geology, J. W. Dawson 44fi 



Third edition 573 



Adams, C. B., assistant geologist, survey of 



Vermont 469 



Elements of Geology 392 



sketch of 392, 689 



views on Taconic 665 



work in Vermont 391 



JColian limestone, name proposed 472 



Agassiz, Louis, Etudes sur les Glaciers 364 



Physical characters of Lake 



Superior 415 



sketch of 417, 6S9 



views on glacial drift 416 



subsidence and 



deposition 508 



Aiken, E. A., assistant, geological survey of 



Virginia 341 



Aiken, William, ideas on mountain uplift. 321 

 Akerly, Samuel, geology of the Hudson 



River 249 



on geology of Dutchess 



County, N. Y 223 



origin of alluvion 223 



sketch of 689 



Alabama, survey under E. A. Smith 565 



Michael Tuomey . . 408 



Aldrich, Truman H., sketch of 689 



Alexander, Caleb, on supposed volcanoes 



in Connecticut 209 



Alexander, J. H., work in Maryland 321 



Alger, Francis, geology of Nova Scotia 288 



sketch of 689 



Allegheny Mountains, structure of 513 



Allen, G. N., botanist Hayden survey 595 



American continent, geological history 



of 60'.<-t;n 



Geological Society, formed 239 



officers of . . 239 



Geology, Ebenezer Emmons 458 



Journal of Science, foundingof 215, 228 

 Mineralogical Journal, founding 



of 223 



Ami, H. H., assistant on geological survey 



of Canada 649 



Analytical chemistry, early condition of... 210 



Anchisaurus colurus, finding of : 632 



Andrews, Ebenezer B., assistant on geolog- 

 ical survey of Ohio 541 



sketch of 690 



views on origin of 



drift 544 



Antecedent valleys, term first used 566 



Page. 



Antisell, Thomas, sketch of 4.54,690 



work on Pacific Railroad 



surveys 453 



Appalachian chain, physical structure of.. 370 

 structure, views of Rogers 



brothers on 493 



Appendix A.— Development of the geolog- 

 ical column 677 



B.— Biographical sketches of ge- 

 ologists 687 



Aqueo-igneous action 318 



Arkansas, geology, geography, etc., by 



H. R. Schoolcraft 240 



opposition to geological survey. 483 

 work of D. D. Owen and Richard 



Owen 482 



Artesian wells in arid lands 247 



Ashbunrer, Charles A., assistant, geological 

 survey of Penn- 

 sylvania 582 



sketch of 690 



Ashburner, William, assistant, geological 



survey of California 515 



Atwater, Caleb, on mammoth bonesin Ohio. 249 



Auriferous gravels, J. D. Whitney 578 



Bad Lands, fossils, first systematic account 



of 413 



second expedition of F. V. Hay- 



. den 591 



work of Meek and Hayden in. . 585 

 Bakewell's geology, first American edition. 292 

 second American edi- 

 tion 316 



Bald Mountain, section after C. D. Walcott. 674 

 Ball, John, views on geology of Rocky 



Mountains 319 



Bannister, H. M., assistant, geological sur- 

 vey of Illinois 496 



Hayden survey 597 



Barnes, Daniel H., sketch of 690 



suggestions of faulting . 264 



Barrande, views on Taconic 667 



Barris, Willis H., sketch of 690 



Base level of erosion, term first used 567 



Basin Range, named by G. K. Gilbert 616 



structure of 617 



Batty, J. H., naturalist, Hayden survey 599 



Beale, John, assistant to Owen 413 



Beaman, John H., meteorologist, Hayden 



surveys 593 



Bechler, G. R, topographer, Hayden sur- 

 vey 596,598 



717 



