INDEX. 217 



Page. 



Jleiractoriness in clays , 51 



"Refractory quotient" 31 



Residual clays ' ' '' ' ' 5' g, 13, 69, 73, 74 



Bhea, Mrs. C, Colbert Co., clayafrom 110 



iUes, Dr. Heinrich, general discussion of clays by 3 



'» ' " ) pliysical and chemical properties of clay by 14 



" ' " " . quoted 69, 70, 79, 81, 88, 89, 92, 93, 94, 97, 98, 99, 102, 103, 



104, 109, 110, 126 



Roberts' Mill, Pickens Co., clay near 97, 170 



Robinson Springs, Elmore Co., clay near 88 



Rock Run, Cherokee Co., bauxite, refactory 142 



Hock Run, Cherokee Co., clays near 74, 117, 118, 133. 136, 160 



" " " kaolin near 28 



Rodentown, DeKalb Co., pottery and clay near 80 



RoUin's, Thos., Franklin Co.. clay 108, 109, 180 



Russell County clays ' 87 



Rnsselville, Franklin Co.. clays near 108 



Rutile (titanic acid) in clays, 21 



Rye's pottery, Milldale (Betroit P. O.) 101 



.St. Louis Are clays, silicain 20 



Sand determination 49 



Sand in clays 18, 20, 21 



Sand, molding, Marion Co ' 105 



Saunder's Ferry, Tuscaloosa Co., clays near 95 



Savoy P. 0., Franklin Co,, clays near 108 



Saxony clays and kaolins 54 



School House Hill, Centerville Co. , clays in ' 91 



Schists, mica 70 



Screening of kaolin 65 



-Sections of clay beds and outerops 77. 78, 89, 90, 91, 93, 94, 95, 96, 98, 99, 



100,102, 103, 104, 105, 109, 110, 111, 162 

 Seger cones (pyramids) 32 



" quoted .~. 15, 18, 21, 59 



Sedimentary clays 5, 7 



Semi-refractory clays 131 



iSettling tanks 66 



Sewer pipe in U. S. in 1897 valuation of. 1 



Shales 7, 183, 184 



;Shale8, Carboniferous, for vitrified and pressed brick, terra cotta. etc 80, 81, 105 



Sheffield Paint Company, clay of. 112 



Shewberry, quoted 200 



Shirley's Mill, Fayette Co., clays near 103, 176, 184 



Shrinkage in clays 18, 23, 24, 26, 56, 132 



Silica determination 46 



" for paint and glass manufacture 112 



in clays 20, 21, 51 



Silicate of lime in clays 17 



Siliceous clays 28 



Sideritein clays 44 



Sink hole clays 73 



