242 
INDEX. 
Page. 
Calico Mountain, clays near 130 
Call, R. E., on drainage in Arkansas 27 
Camden, clays at and near 138 139,145-146 
Canada Creek, clays on 81 
Carboniferous rocks, occurrence and charac- 
ter of H-17 
section across, figure showing 17 
Carrion Crow Mountain, clays on 157-158 
coal in 157 
section of 158 
Cato syncline, description of 94, 132 
Cement clays for, analyses of 29 
Chalk Bluffs, clays near 42 
Chambersville, clays near 52-53 
Cheatham clay, analysis of 87 
quality of 74-75 
section of 74 
Cheltenham, Mo., clay from, analysis of 237 
Chemical action, clays due to 32 
Cherry Valley, clays of 40,72 
Chickahah, clays near 232 
Chickahah Mountain, clays near 231 
Clarks Creek, clays near 77 
clays near, analysis of 87 
Clarkesville, clays near — 122-123 
clays near, analysis of 122 
section near 122 
Classification of clays, plan of 20 
Clay County, clays of 45, 54 
Clay products, production of 238 
Clay workers, directory of 239-240 
Cleveland County, clay industry in 56 
clays of 54 
geology of 54-55 
sections in 55 
Cloverhead, section at 125 
Coal, occurrence of 16, 98, 156-157 
Coal Hill, clays at 121, 123-124 
section near 124 
Collegeville, clays on 192 
clays on, analysis of 193 
section on 193 
Colona, section near 230 
Color of clays, explanation of 40 
Columbia County, clay industry in 58 
clays of 56-58 
well in, record of 57 
Conway, clay industry in 97 
clays near 95, 96, 225 
section near 97 
figure showing 92 
Conway County, clays of 58-61 
geology of 58 
section in 59 
Cooks Creek, clays on 84 
Coops Prairie, clays of 208 
section through, figure showing 208 
Copperas Creek, clays on 40 
Cornish Ferry, clays at 90 
Cox Creek, clays near 75 
Craighead County, clay industry in 63-64 
clays of 62 
geology of 62-63 
sections in 62, 63 
Crawford County, clays of 66-71 
Pag.-. 
Crawford County, clays of, analyses of 67-69 
geology of 65-66 
sections in 65-66, 70 
Crawfords Bluff, clay at 49 
Cretaceous clays, disposition of 37-38 
distribution of 37 
Cretaceous rocks, occurrence and character 
of 18,37 
Crider, A. F., work of 9 
Crittenden County, description of 70-71 
Crooked Creek, clays on 192 
Cross County, clay industry in 73 
clays of 40, 44, 72 
geology of 71-72 
sections in 71,72 
Crowder's clay, analysis of 87 
quality of 76-77 
Crowleys Ridge, clay and lignite near 39-40 
clays on, analyses of 155, 181 
description of 12 
geology of 43-45 
Cypress Bayou, clays of 133 
Cypress Valley, clays in 95, 225 
D. 
Dallas County, clay industry in 88-89 
clays of 73-87 
analyses of 87 
geology of 73 
sections in 74, 78-86 
Danville, clays at 231,232 
Danville Mountain, clays at 231 
Dardanelle, clay industry at 235 
clays at 232 
analysis of 237 
Dardanelle Ridge, clays of 130, 157, 231 
Darysaw Creek, clay on 106 
Dayton, clays near 208 
Devall Bluff, clay industry at 161-162 
section at 161 
Devonian rocks, occurrence and character of 13 
Distribution of clays , conditions governing . 34 
details of 34-46 
See also individual counties. 
Double Head Bluff, clays at 72 
Drainage, benefit of 27 
Drain tiles, clays for, character and distri- 
bution of 27 
Drew County, clay industry in 90 
geology of 89-90 
well in, section of 89 
Dry Tulip Creek, clays on 74 
section on 74 
Dyer, clays near 70 
E. 
East Cadron Creek, clays on 96 
East Tulip Creek, clays on 82 
Eckel, E. C, preface by 9 
Eldorado, clays near 219 
section near 219 
Ellsworth, clays near 130 
El Paso, topography near 222 
England Creek, clays on 45 
Enolia, clays near 59 
