INDEX. 



Page, 



"Weathering, belt of , phenomena of.- 409,561 



reactions of 1140-1141 



relations of, to sedimentary rocks 555-560 



residual material in, distribution of 554-555 



rocks produced from material of, without 



transportation to the sea 559-560 



temperatures in 431 



thickness of - 534-535 



transfer of material from, to belt of cementa- 

 tion. - 538 



transition from belt of cementation to 560-501 



water in, amount and source of... - 413-416 



depth and degree of 529-532 



dissolved materials resulting from, distribution 



of 536-554 



effect of, on structures and textures _ 524-526 



forces and agents of _ 532 



gains and losses in 522-524 



minimum and maximum, i-egions of 531-532 



rate of — - 532-536 



rock constituents lost by ... 516 



stages of n discussion of 535-536 



surfaces produced by 527-528 



ultimate products of ... 521 



volume changes in rocks by .' 522-524 



"Webskyite, formation and sources of. . 349, 350, 372, 391, 402 



"Weed, "W. H., figure cited from... 1214 



on copper deposits in Mexico ]056 



on ore depositsof the Elkhorn mining district.. 1214 



on ores, genetic classification of 1053 



on present mineral vein formation 1060, 1066, 1068 



on secondary enrichment of ore deposits 1188 



on travertine deposits of Mammoth Hot Springs. 1032 

 "Weed, W. H., and Pirsson, L. V., on tellurides asso- 

 ciated with gold ores of Judith and 



Little Rocky mountains, Mont 1119 



Weidman, Samuel, on agriculture as affecting 



ground- water level.. 427 



ou deformation of rocks by combined flowage 



and fracture _. 1009 



on devitrification 247 



on regeneration of mineral particles 705 



"Weight. .See Specific gravity. 



"Welding in zone of anamorphism, extent of 670-671 



"Wells, influence of, on ground-water level.. _ 427-428 



Wells, artesian, section showing requisite conditions 



for 577 



Wendt, Arthur F., on genesis of ore deposits 1206 



"Wernerite, character, occurrence, formation, alter- 

 ations, and alteration productsof. 311-314, 



394 

 Whitney, J. D., on residual clay in upper Missis- 

 sippi Valley. 520,1148 



on volume changes in rocks by weathering 524 



Whitney, Milton, ou rainfall and run-off, relations 



of 414 



on sand grains and clay grains in residual lime- 

 stone subsoil, number and surface 



area of 496 



on soils, size of particles of 136,892 



on water in arid soils _. 413,418,419 



Whitney, Milton, and Means, T. H., on endurance 



of plants to alkalies. __ _. 478 



Whittle,C.L.,on enlargement of mineral particles. 644,705 



on schist conglomerates 859 



Wiechmann, F. G., on atomic weights _i 936 



Willemite, deposits of _ 



Williams, G. H., dedication of monograph t 

 on devitrification 



on enlargement of mineral particles 



on metasomatism 



on origin of pegmatites 



on pegmatization 



Willis, Bailey, on Hamilton shale, origin of 



on limestone deposits in the ocean, f orm& 



Winchell, A. N., on Duluth gabbro, conten' 



ore in _ 



"Winslow, Arthur, on flexibility of rocks. 1 ..-. 



on lead and zinc in limestone 



Wisconsin, ground water in Potsdam sand 



rate of flow of 



lead and zinc district of, conditions in, I 



second concentration of ore 



Wisconsin, University of, aid by students o 



Wolff, H. C, on capillary flow of water, 



tion of, by meniscus... 



on water in dry soil, motion of 



Wolff, J. E., on albite crystals in Hoosac 



orientation of J 



on albite-pelite-gneiss of Hoosac Mourn 



on porphyritic texture in schist 



on regeneration of mineral particles. ■!. . 



on schist conglomerates - 



photomicrograph cited from _ \ 



Wolff, J. E., Pumpelly, Raphael, and D ] 'd. 

 on crystallographic orie -i\ ■ 



porphyritic feldspars 



Wollastonite, chemical and physical cons; a - 

 formation of, f rom calcite and quar,. i 



changes involved in „ 



formation of, from limestone, cheru.a 



tion involved in ... 



occurrence of ._ .. 



sources and modes of formation of... h 



241, 242, 272-273, 2S0, 318. 372 . 18 



Woods, T. H.,Purington,C. W.,andDone&k 



on occurrence of rhodonite 



Camp Bird mine, Colo '.. 



Woodward, R. S., on mass of theatmospho e 



on volume of lithosphere {•. 



Woodworth, J. B., Shaler, N. S.,andFoerste 

 on occurrence of graphitic c&i 



Worms, effect of work of, on soils 



Wright, A. W., on occurrence of oxygen in r. 



ites 



Wyatt, Francis, on precipitation of phosph. 

 soil -i 



Y. 



gj 

 Yellowstone Park, deposits of travertine ar 



seritein.. 



springs of, sources of water of _ 



Yung, M- B., and McCaffery, R. S., on cop] 

 posits of New Mexico J__ 



Z. 



Zeolites, alterations and alteration products 

 character, occurrence, formation, and 



ations of 



chemical and physical constants of 20 



occurrence of 



