INDEX. 



A. 



Page 



Absorption, common brick, 253 



fire brick, 326 



floor tile, table, 287 



soft-mud bricks, table, 254 



stiff-mud bricks, table, 254 



tests of brick 253 



vitrified brick, 253 



Adams Clay-Mining Co., clay pit of,. 482 



Adams, Henry C, clay pit of, 132 



Air-separation method of cleansing 



clay 38 



Air shrinkage, see Shrinkage. 



Alkalies, amount in clay, 67 



fluxing action of, 68 



source of, 67 



Alloway, description of clay near,. .497, 498 



Alloway clay, The, 142 



character of, 143 



economic description of, .. .351-353 



Gloucester county, 421, 422 



mica in, 44 



physical properties of, . . . .352, 353 

 quantity of soluble salts in,.. 77 



Salem county, 494-500 



specific gravity of, 114 



Alpha, clay at, 508 



Amboy stoneware clay, 168 



extent of, 170 



American Ceramic Society, 52, 292, 302 



Ammonia, in clay, 67 



Amount clay mined in New Jersey, . . . 340 



in United States, 340 



shipped to other states, 341 



Analysis, chemical, 49 



value of, 331 



glauconite, ' 46 



rational 52 



ultimate, 49-52 



Analyses, ball clays, foreign, 296 



different types of clay, 51 



feldspar, 469 



fire brick, foreign, 333 



New Jersey, 327 



fire clays, American, 319 



foreign, 320 



New Jersey, 315-317 



Analyses — Continued. Page 



fireproofing clays, 281 



highly refractory clays, 



440, 441, 443 



kaolins, foreign, 297 



pressed-brick clays, foreign,.- 221 



Table of, Appendix C. 



Anderson & Company, A. C, clay pits 



of 43° 



Anness & Potter, clay pits of, ... .440, 441, 



444-456 

 Applegate, D. H., clay on property of, 477 

 Applegate, Samuel, clay on property 



of, 487 



Appleget, Chas. H., clay on property 



of, 491 



Aqueo-glacial clay, 124 



Asbury clay, 145 



economic description of, .. .353-356 



Monmouth county, 475-478 



occurrence of, 145 



physical properties of, 354 



specific gravity of, 114 



stratigraphic relations, 145 



Asbury Park, description of clay 



near, 475"477 



physical characters of clays 



at, 355 



section of clay pit at, 354 



Assiscunk creek, description of clays 



on, 379 



Athens, Texas, analysis of fire clay 



from, 319 



Atlantic county, clay deposits in,. . .369-372 



clay industry in, 372 



Auger, used for boring clay, 28 



B. 



Bakersville, clay at, 132, 369, 372 



Ball clay, 296, 338 



amount mined, 1902, 340 



analyses of, 51, 296 



description of, 214 



Middlesex county, 442, 452 



uses of, 214 



value mined, 1902, 340 



Barber, E. A., 304, 305 



34CLG 



(535) 



