INDEX 



(Consult also the table of contents. Names of genera and species are, with few 



exceptions, omitted.) 



Aar, delta of, 6io 



Aarmassive, 308 



Abbe, C, cited, 56 



Abbotsham, 223 



Ablation, 17, 263 



Abrasion, 18 



Abrolhos Islands, 416 



Abu Roasch, 856 



Abu Sir, 355 



Abyssal district, 983 



Abyssinia, 355 



Abyssinian Mountains, rainfall in, 68 



Abyssolith, 310, 731 



Abysso-pelagic district, 983 



Acadian, 1128 



Acanthin, 457 



Acaustobioliths, 384 



Acaustophytoliths, 280, 467 



Acceleration, differential, 964 



, illustration of law of, 969, 970 



Accordanz, 821 



Accretions, 719 



Achatinellidae, mutations of, 1043, 1052 



Acid, crenic, 37 



, humic, 37 



, ulmic, 37 



Actinic (chemical) rays, 28 



Adams, F. D., cited, 92, 747, TTi 



Adams, F. D., and Coker, E. G., cited, 773 



Adaptive radiation, 1054 



Adirondacks, 834 



Adour River, 223, 558 



Adriatic Sea, 108, 240 



, Po delta in, 584 



, surface salinity of, 153 



^Egean Sea, 240, 334 



, temperatures of, 189 



^olian Islands, volcanoes of, 861 



^thoballism, 749, 765 



j^tna, radial dikes of, 870, 871 



Afghanistan, habitual fault lines of, 882 



Africa, coast of, 235 



African deserts, salinas of, 359 



Agarica, 406 



Agassiz, A., cited, 102, 125, 219, 387, 406, 

 408, 414, 416, 46:, 462, 469, 470, 471, 

 519, 520, 685, loii, 1021, 1024, 1026, 

 1038, 1069 



, quoted, 519, 680, 10 16, 1019, 1020 



Agassiz, L., cited, 143, 462 



Agger, 224 



Agoniatite limestone, 425, 1131, 1132 



Agra, 26 



Agulhas banks, 218 



Agulhas shelf, 103 



Aidin, 54 



Aigon, earthquake fissures in 1861 at, 883 



Air frost, 63 



Airy, G. B., cited, 265 



Ajusco Mountain group, new mountain 

 formed in 1881 in, 863 



Alabama, coastal plain of, 839 



Aland Islands, 241 



Alands deep, temperatures in, 190 



Alaska, 263 



, dredging off coast of, 641, 642 



, glaciers of, 324 



, stone glaciers from, 544 



, tundra of, 507 



Albatross, dredgings by, 519, 676 



Albatross, marine habitat of, 985 



Alberta, pre-Cambric reefs of, 418 



Albert Edward Nyanza Lake, 124, 359 



Albert Lake, 118, 119 



, composition of, 157, 158, 159, 160 



, salinity of, 155 



, soda deposits of, 361 



Albert Nyanza Lake, 124 



Albien, 730 



Albuquerque, dune sands from, 553 



Alcyonaria, 385, 392, 1083 



Aldborough, church at, 225 



Alden, W. C, cited, 92 



Aldrich, T. H., cited, 916 



Aletschhorn, 308 



, unconformity in, 825, 826 



Aleutian Islands, basaltic lava field in, 867 



, submarine volcanoes of, 872 



Algae, 935 



, encrustation by silica, 477 



Algal Lake, peat of, 498 



Algeria, onyx deposits of, 345 



;-, salt dome of, 379, 758 



Algiers, 221, 240 



Alhambra formation, 591 



, torrential deposits from, 630 



Allahabad (Persia), 26 



Allan, Dr., cited, 413 



Allegheny formation, thickness in Appala- 

 chians of, 904 



Allegheny River, gravel terraces of, 136 



Allen, H. S., cited, 685 



Allen, J. A., cited, 921, 956 



Allochthonous, 298, 467, 478 



Allolebod, 355 



Allometrons, 961, 970 



Allotriomorphic dolomite crystals, 445 



Alpena, reefs at, 427, 428 



Alps, alluvial deposits of, 584 



— ■ — , igneous intrusions in, 308 



Altenburg, 1086 



Amazon River, 248 



, red mud opposite mouth of, 669 



Amber, 1075 



Amboina Island, 519 



Ambulacral areas, 949 



II51 



