IXDEX. 



1261 



Page. 

 Ground water, circulation of, sections (diagrams) 



showing __ _ 570, 571 



tree-like system of 583 



upward movements of, factors influencing'- 419-422 



vigor of -. 571-572 



compounds present in . 76-77 



deposition of minerals from 613-617 



dissolution of material by 613-617 



effect of, in cases of igneous intrusion . . 650 



evaporation of, effect of cultivation on 421, 422 



gases present in 68-69 



geological work of 156-158 



ions present in. _ _ 92 



large channels preferred by 580-582 



level of, change in, influence of, on ore deposition . 1206 



depth of 409-411 



factors affecting or determining 423-429 



agriculture 427 



barometric pressure _ 428 



capillarity 412 



denudation 426 



evaporation 425-426 



man _ 427-128 



rainfall 42^426 



seepage 425 



teinp3rature __ 428 



uplift and subsidence 426 



form of 411-±13 



in arid and humid regions, as affecting ore 



deposits 1180 



ore deposition as affected by change in 1206 



relations of, to topography 410, 411-413 



variation in 423-429,1180 



importance of, in lead and zinc regions 



of Mississippi "Valley _ 429 



materials added to, in belt of weathering 617-618 



metamorphism by 65-123 



movements of ._ 123-158, 



416-429, 571-593, 661-66S, 1021-1029 



in transporting metals 1075-1081 



speed of 583-588 



vertical and horizontal, relative length of. 579-580 

 See also Ground water, circulation of. 

 pressures, temperatures, and depths of, table 



showing relations of. 567 



principles of chemical reactions applicable to.. 84-123 



principles of solutions applicable to 65-83 



rate of flow of 583-588 



silica in, large amount of, where vegetable mat- 

 ter is abundant ;_ 476 



solution of gases in 68-72 



solution of solids in 72-81 



source of 138-129 



temperature of, as affected by earth movements. 590 



importance of _._ 615 



increase of, with depth 578-579 



on entering and issuing from the earth ... 589-593 



thermal effects of _ 589-593 



upward movements of 419^22 



forces influencing, vegetation 422-423 



molecular attraction 419-422 



universal presence of _ 123-124 



See also "Water; Ascending waters; Descending 

 waters. 

 Grove, Sir William, on segregation of carbon diox- 

 ide from interstellar spaces by gravi- 

 tation 973 



Page. 

 Grunerite, alterations and alteration products of.. 284, 



373, 384 



chemical and physical constants of 197, 283, 284 



occurrence and associations of 284 



origin of, from iron carbonate, chemical reaction 



involved in 834 



source and mode of formation of.. 244, 



245,284,370,392,407 



Grunerite -magnetite- quartz rocks, origin of 834-841 



Griineritic marbles, origin of 833 



Gumbel, K. "W. von, on use of term "epi" 777 



Gypsum, alterations and alteration products of 358, 



373,384,396,400,788-789 



chemical and physical constants of 197, 357, 788 



occurrence and associations of 357 



solubility of, in salt water 119 



source and mode of formation of _. 357-358, 



370,376,402,788-789 



Hague, Arnold, on calcareous doposits in Yellow- 

 stone National Park 551 



Hahn, Julius, on annual range of temperature 437 



Halite, chemical and physical constants of 197 



Halite and albite, alterations and alteration prod- 

 ucts of 375,400 



Halite and nephelite, alterations and alteration 



products of 388,400 



Hall, P. D., and Lenher, Victor, on precipitation of 



gold 1091-1092, 1096-1097, 1098 



on telluride of silver, artificial production of... 1124 



on tellurides, formation of.. 1120-1121,1124 



Hallock, "William, on variations in rigidity of bodies 



accordant with degree of pressure . . . 672 



Halloysite, chemical and physical constants of 197 



sources and mode of formation of 253, 254, 370, 389 



Hambuechen, Carl, on potentialization of energy in 



strained metals and minerals.. 97,691 



Hammond, J. H., on Witwatersrand banket 1041 



Hann, Julius, on temperatures at surface of the 



earth _ _ __ 52 



Harmotome, character, occurrence, formation, and 



alterations of __ _ 330-335 



Harris, G. D., and Dall, "W. H., on phosphates 976 



Hautefeille, Paul, experiments of, producing rutile 



group of minerals _ 231 



Hatiy, P. J., on rock nomenclature 785 



Hauynite, alterations and alteration products of. 298-299, 



373, 384, 399 



chemical and physical constants of 197,295,287 



occurrence of 297-298 



Hayes, C. "W., on bauxite deposits 985,1037 



on colors of soils of Nicaragua as indicating pres- 

 ence of ferric or ferrous oxide 470,471 



on Nicaraguan streams, lack of sediment in 504 



on origin of phosphates 976,977 



on quartz crystals, corrosion of _ 218 



on solution of silica. _ 76,848 



Heat, absorption and liberation of, by solution 81 



chemical effects of 56,89,105,113,208,362 



conductivity of rocks for 53 



derived from the sun, metamorphic effects of .. 51-53 

 derived from within the earth, metamorphic 



effects of 53-54 



increase of, effect of , on chemical reactions 89 



liberation of, dominance of reaction causing . . . 362 

 mechanical effects produced by, in belt of ce- 

 mentation 595 



