INDEX. 



1249 



Page. 

 Beta spoduinene,alterations and alteration products 



of 3:i2,;:97,405 



chemical and physical constants of __ _ 200,280 



sources and mode of formation of . 280-281, 369,392, 408 



Biddle, H. C. , on precipitation of copper 1102 



Bingley, C. W., on devitrification 248 



Biotite, alterations and alteration products of ... 339-343, 

 354, ' 72, 378, 379, 396, ; 97, 399, 402 



chemical and physical constants of 195,336 



occurrence of 339 



sources and modes of formation of 255,257,278,280, 



286, 312, 354, 369, 377, S78, 385, 387, 

 389, 393, 394, S97, : 99, 400, 401, 405 

 Biotite and hematite, alterations and alteration 



products of 379,390,398,401 



Biotite-chlorite, chemical and physical constants of. 195 



source of 36^,379,397,401 



Biotite-graywacke, photomicrographs of 888 



Biotite-slate, photomicrograph of 902 



Birkinbine, John, on magnetite beach sands of New 



Zealand 1039 



Bischof, Gustav, on carbonation of silicates.. 175-176 



on carbon dioxide in earth's crust 474 



on carbonic acid in ground waters 610 



on carbono-silicic cycle of metamorphism . 176-177, 181 

 on decomposition of silicates by alkaline car- 

 bonates 476-477 



on interchange of carbon dioxide and silica in 

 chemical reactions at different tem- 

 peratures 108 



on magnesium content of corals and marine 



shells 798 



on oxygen contained in ground waters, amount 

 of 



605 



on penetration of basalt by water 123 



on precipitation of calcium and magnesium car- 

 bonates, order of 799 



on replacement of carbonic acid by silicic acid. 94 



on sea water, density of 147 



Blake, R. F., on effect of work of burrowing ani- 

 mals on soils 450 



Blake, R. F., and Letts, E. A., on amount of oxygen 



in soils _ 470 



on bicarbonates in zone of weathering 536 



on carbon dioxide in the atmosphere 962 



on carbon dioxide in soils _. __ 475 



Blake, W. P., on ore deposits at Ducktown, Tenn .. 1182 

 on organic matter, action of, in reducing and pre- 

 cipitating oxidized products 1157,1158 



on precipitation of lead and zinc by organic 



matter 1111 



Blende, secondary, figure showing 1156 



Blow, A. A., on ore deposits of Leadville, Colo 1214 



Blue Mountains, Oreg., copper deposits of 1055-1056 



Bog iron ore, formation of deposits of.. 550 



Bohemia, basalt from, losses in, by weathering... 509,522 



phonolite from, losses in, by weathering 512 



Boration, definition of 206 



Bornite, production of, reactions showing.. 1162 



zone of deposition of.. _ 1160 



Bornstein, Hans, and Landolt, Richard, on viscosity 



of water at different temperatures. . 141 

 Boulder Hot Springs, Mont., mineral vein forma- 

 tion at 1059-1060, 1064, 1066, 1068 



sources of water of 1068 



Boussingault, J. B., on amount of carbon dioxide 



emitted by volcanoes 969 



HON XL VII— 04 79 



Page. 

 Boussingault, J. B., and Lewy, B., on carbon dioxide 



in soils.. _ 474 



Bowlder, gravel, and pebble deposits, discussion of _ 853-860 



Bowlders of disintegration, production of 527-528 



Branner, J. C, on ants and termites, burrowing 



work of.... 448,449,456 



on bowlders and mountains of disintegration in 



Brazil _ 528 



on carbon dioxide brought down by rain, amount 



of 452 



on disintegration of rocks by changes in tem- 

 perature 439 



on diurnal change of temperature in Brazil 436 



Brauns, R., on formation of webskyite 350 



Breccias, pore space in 127 



Brecciation. See Fracture. 



Breunnerite, sources and mode of formation of .. 309,369 



Brewster, David, on devitrification of glass 248 



Briggs, L. J., on absorbent power of soil for carbon 



dioxide 475 



Brogger, W. C, on alteration of arfvedsonite to 



acmite 286 



on pegmatization 721, 725 



Bromide of magnesium. See Magnesium bromide. 

 Bromine, in earth's crust, amount and percentage 



of 978 T 1002 



in ocean, amount and percentage of 936,944,978 



in sea salt, percentage of 942, 943 



Bronzite, alterations and alteration products of. 268-271, 

 372,379,399,404,405 



chemical and physical constants of _ 196,267 



occurrence of __ 268 



Bronzite, calcite, and quartz, alteration products 



of 379,407 



Brookite, alterations and alteration products of 230- 



231,372,379 



chemical and physical constants of 196, 230 



occurrence of ._ ._ 230 



sources and modeof formation of 231 



Brown, R. C.,on ore deposits of Butte, Mont 1183 



Brucite, alterations and alteration products of 235, 



372,379,396 



chemical and physical constants of ._ 196,234 



occurrence of 235 



sources and mode of formation of 325, 



349, 369, 380, 385, 391, 396, 403, 404 



Buckley, E. R., figure cited from __ _ 814 



on crushing strength of Berlin rhyolite-gneiss 



and Niagara limestone. __ 534 



on effect of freezing on rocks, as influenced by 



pore space _ ___ 441 



on pore space in sandstones. 124,126,569,863 



Burrowing animals, work of, on soils 447-451,456 



Butte, Mont., copper ores at, secondary enrichment 



of 1182-1183 



mineralized zones at, copper and silver ores 



separately borne by _ 1081 



ore deposits of, contiguous mineral zones in, 



bearing different ores... 1203 



Bytownite, character, occurrence, formation, and 



alterations of 259-265 



C. 



Cacti, disintegrating effects of, on rocks 445 



Calamine, formation of.. _ 828 



Calcite, alterations and alteration products of ... 238-240, 

 373,379,380,407,408 



