INDEX, 



Page. 



Absorption of clays 39 



Air shrinkage of clays 23, 26, 28 



Alabama as a clay producing state 1 



Alabama clays, physical and chemical properties 114 



" analyses of. 52,201 



'' combined water of 24 



" composition of 5 



" geological relations of 8, 69 



" " moisture in 23 



" " plasticity, of ..; 25 



'' shrinkage of. 23, 24, 27 



" silica in 20 



" suitable for making Portland cement 202 



Alabama fire clay 131 



fire brick works 109 



Metamorphic rocks 70 



Alum in settling of kaolin 66 



Alumina determination ! 47 



" in excess in clays 16 



Archaean clays 70 



Algonkian clays 70 



Alkalies in clays 11 



" " " (china and ball clays) 115 



{t " " determination of 45 



Analyses of bauxite, Rock Run, Cherokee Co 143, 144, 145, 146 



Analyses of clays, ultimate 45, 54, 57 



" " " rational , 49, 50, 57 



" u u Alabamaclays 52 



*' " " " " suitable for Portland cement 201 



Analyses of clays, Bagwell's, W. D., Fayette Co 194 



" " ' Beckwith's, W. J., Colbert Co 199 



" ' blue from near Glen Allen 197 



" " " brick, Argo, Jefferson Co 193 



" Birmingham, Jefferson Co 193 



" Woodstock, Bibb Co 191 



" " " china, Anderson, F. Y., DeKalb Co 125 



" " " " Chalk Bluff, Marion Co 126 



" Eureka Mines, DeKalb Co ; 123, 124 



" Frederick Briggs, Marion Co 128 



" Hughes, J. R., Gadsden 120 



'' near Kymulga, Talladega Co 122 



" " *: u Pearce's Mill, Marion Co 129 



