INDEX. 209 



Page. 



Clay County clays 72 



" " kaolinite veins 72 



" ' micaschists 70 



' " mica veins 72 



" " pegmatite veins 72 



"Chay horses " 74, 76, 76, 108 



Clay origin 3 



Clay produced in U. S. in 1897, valuation of. 1 



Clay properties . 1, 3, 8, 114 



Clay prospecting 59 



Clay rocks (shales) 7 



"Clay substance" 9, 50 



Clays, classification of. 57 



" composition of 9 



" distribution of. 8 



" mining of 59, 60 



" miscellaneous 193 



" preparation of. 59 



" for headstones of graves 107 



44 for Portland cement 201,202 



" for vitrified bricks 10 



" for whitewash 110 



Clays from feldspar rocks 5 



' " gneisses 5,16 



" " granites 5, 16 



" " limestone 5,73 



" " Paleozoic shales 6 



Clays, geological structure and distribution of. 6 



" in sink holes, ponds, etc 73 



" in veins 70 



Clays of Alabama, geological relations of. 69 



" " Mississippi........... ". 83 



" *' Red Mountain, Wills' Valley 77, 78, 78 



Clays, residual 5, 6 



" sedimentary 5, 7 



Cleburne County kaolinite veins 72 



" " mica veins 72 



ii '* micaschists 70 



' " pegmatic veins 72 



Clingscale's, Dr., Miss., clays 85, 112 



Coaldale, Jefferson Co., paving and vitrified bricks 80, 185 



4< " " shales 184 



Coal Measures, clays from 80, 131 



Coastal Plain Report, quoted 82, 88,91,94, 106 



Cobalt in clays ..... 116 



Colbert County clays 82, 109, 129, 157, 180, 198, 202 



Color burning clays 58 



Coloring of clays by iron \ 13 



Color of clays '... 15, 39 



Combined water... 28, 45 



