None
Potsdam Series 29» 400 OEOIXKilCAL SURVEY OF GEORGIA. Protection of Knox Ridges _ 81 Progreas of the Survey 364, 371 Psilomelane 192 Ptychoparea 40 Pvrolusile 191 Quartzite, Chilhowie 36, 77 Ocoee 33 Indian Mountain 272 Red or **Fo88ir' Iron Ore — Analyses 187 Characters 176 Distribution 181 Hematite 176 Mining of 184 Occurrence of 177 Source of 177 Thickness of- 183 Red Mountain Series — General Character 48 In Polk County 86 In Floyd County 94 In Gordon County llO In Murray County 113 In Whitfield Countv 117 In Catoosa County 121 In Chattooga County 124 In Walker Countv 132 In Dade Countv -.42 Recent Formations 55, 146 Regional Growth of Formatiouh 15 Rosaca Fault 111 Residual Earths, Numerous References — Ridges, Origin of- _. 2 Ripple Marks ; IKDEX. 401 Iti ver Channels, Size of (io Rivers, Character of 04 Roads — Relation of Roads to (jcological and Physical Features 290 Character of 290 Cost of Bad 298 On Different Geological Formations 291, 294 Cxood versus Bad 298 Good, in Europe 800 Locations of 290 Sources of Road Material 296 Rockniart Slates 44, HI, 84, 275 IW^kwood Series 29 Rock Decay 10, 82 (See Saltville Fault.) Rome Fault 28 Rome Sandstone-. 89 Safford, James 40, 42, 43, 45, 48, 866 Salt})etre Cave 74 Saltville Fault 28 Sandstones 35, 49 Chilhowie ^ 86, 272 Coal Measures 278 Oostanaula 272 Red Mountain 272 Sub-Carboniferous ^ 278 Scolithus \ 25 Seas, Cambrian 56 Carboniferous 58 Devonian 58 Ordovician 57 Pliocene 59 Silurian 57 Sedimentary Rocks 8 ('2r» 402 GEOLOGICAL SURVEY OF OEokoil. Silurian System 48 SinkB 74 SUtes 35, 275 Slickensidee 21, 89 Slide Rock 89 Smith, E. A 32, 36, 38, 39, 44, 366 Soils 309 Accumulation of food of 318 Ammonia Salts in 325 Allu vial . Formations of 318 Analyses from Crystalline Rocks 355, 357 Analyses of College Farm 362 Analyses of Experimental Station 355, 357 Analyses of Paleozoic 331,348 Analyses of, Value of 325 Calcareous 322 Character of- 358, 360 Character of Archieau Character of Paleozoic 312 Chemical Relation of Paleozoic 329 Chlorine in 326 Clay .312 College Farm 362 Color of _.312 Constituents of Plant Food 323 Consumption of Plant Food by Corn 327 Consumption of Plant Food by Cotton 327 Consumption of Plant Food by Wheat - 327 Corn, Salts in 327 Cotton, Salts in 327 Creep ..317 Depth of Residual Earth 315 Diminishing Solubility of Plaut Food 319 Effects of Orgauic Matter on ^ 318 Effects of Plant Food on 325 Estimating Value of ^ 325 INDEX. 403 Soils, Experiment Statioos — 351 Ferric Oxide ia 326 Ferruginous 322 Fixing of Plant Food 324 Formation of 312 Formation of Alluvial 318 Formation of Archsean — 317 Formation of Clay 317 Formation of Creep 317 Formation of Limestone 314,317 Formation of Residual 314 Formation of Sandy 317 Formation of Shale 317 Geological Relation of Archsean «361 Of Chickamauga 342 Of Coal Measures 347 Of Floyd 345 Of Fort Payne 345 Of Knox 337 Of Lafayette 347 Of Modern 347 Of Mountain Limestone 346 Of Oostanaula 329 Of Paleozoic 329 Of Red Mountain 344 Of Sub-Carboniferous 345 Geology of Experimental Station 351 Geology of CollegeFarm 362 Heat related to Physical Structure 322 Kinds of 321 Lime Necessary in 325 Marly 322 Moisture in 326 Moisture Related to Physical Structure 322 Origin of Materials of 314 Organic Matter in- , .^. 318 404 OKOLOGICAL SURVEY OF GEORGIA. Soils, Organic Origiu of Liiucstoues 816 Archtuau 851 Plaut Food, Sources of 815 Plant Food, Fixing of 324 Plant Food Necessary 828 Plant Growth 861 Phosphate Necessary 825 Potash Necessary 325 Physical Conditions 326 Physical Properties 821 Relations of Physical Features of 361 Sandy .. 817, 821 Shalv 817 Soda, in 826 Sulphuric Acid, in 826 Sources of Plant Food, in 815 Soluble Minerals, in 858, 860 Structures of Archiean 858 Table of Geological Formations, in Relation to 811 Val ue of Analysis 825 Value of Experiment Station 860 Spencer's Report on South Georgia IMyFy Spencer's Report along M. tfe B. Railway 865 Springs- SS S<|uires, Joseph 88 Stalactites 105 Stevenson, J. J *- 28 Streams, Character of 64 Subsidence of Land .. -. 11 Sub-( arlxmiferous Series — Cf eneral Characters 51 In Polk County ^() In Floyd Countv i)6 In (fordon County 110 In Whitfield Countv --117 In Catoosa Countv 122 INDEX. 405 Sub-Carboniferous Series — Chattooga County ..-.126 In Walker County 135 In Dade County 142 Submergence, Paleozoic 15 Submergence of Georgia 26, 59 Succession of Unlike Materials 12 Synclinals Defined 16 Table of Altitudes 76 Of Economic resources Geological Formations 27, 2^ Of Soils Terraces 98 Terrestrial Movements 11 Thickness of Paleozoic Group 31, 32 Of Formations (see Each Series.) (Also see Under Soils.) Timbers . 289 Trenton Series (see Chickamauga). Unconformities 11 Valleys, Origin of 24 Value of Fossils 30 Walcott, C. D 36, 38, 40, 41, 366, 367 Walker County, Local Geology 130 Physical Features 73 Ores (see Resources). Wateqwwers . 289 Watershed of Coosa Valley 71 Wcisner Quartzite 39 Wells in Knox Series 82 Willet, J. E 367 White, H. C .367 406 GEOIXXJICAL SURVEY OF GEORGIA. Whitfield County, Local Geology 115 Physical Features 71 Ores (see Resources). Zinc in Brown Ore 172 Atlanta, July JSth, 1893. 