General Index. 



PAGE 



Akron stoneware 92 



Akron vitrified brick 58 



Albany slip clay 104 



Andrews, Prof. E. B 30, 274 



Anticlines in Ohio — 



Cadiz 43 



Cambridge 44 



Cincinnati 40 



Fredericktown 43 



Salisbury 43 



Wellsburg 43 



Appalachian coal field 260 



Archaeology of Ohio, II 3 



Artistic tiles: 240 



Auger brick machines 156 



Axes — anticlinal — in Ohio 43 



Ball clays 122 



Barren Measures clays 68 



Bedford shale 27-507 



as a brick clay 57 



fossils of. 507 



Berea grit % 28 



fossils of. 29-508 



Berea shale 30-508 



"Big Indian" oil sand 34-287 



Blue Lick water 6 



Botany of Ohio, II 56 



bibliography of 58 



classification 80 



angiosperms 81 



gymnosperms 244 



vascular cryptogams 246 



ferns 247 



mosses 254 



liverworts 286 



lichens 286 



fungi 300 



algae 385 



slime moulds 397 



Bowlders in drift 38 



Buena Vista stone, 31 



Building material of clay 233 



Burlington group in Ohio 514 



Brick — enamelled 238 



machine made 234 



pressed 153 



vitrified 130 



Brick in building 234 



Brick-making machinery 148-151 



Brookville coal 277 



Cambridge anticline 44 



PAGE 



Cambridge coal 281 



Carboniferous system in Ohio 36 



C. C. wares 122 



glazes of 125 



statistics 126 



Chasing mill 97 



Chemistry in clay working 87-125 



Chemung roeks in Ohio 498, 500-511 



Chester limestone in Ohio 35 



China ware 122 



statistics of 127 



Cincinnati axis 23, 40 



Clarion coal 277 



Clark, Dr. William 602-4-6-1 1-16-619 



Claypole, Prof. E. W— Chapter by. .. 602 

 Clay— 



slkslics in 79 



analysis ......58, 61, 62, 64,"66,'74, 105 



133, 136, 219 



color 72 



composition 46, 71 



feldspar in 72 



fusibility 76 



iron in 74, 84, 108 



kaolinite base 74- 80 



lime and magnesia in 78-82-108 



minerals, rare, in 74- 79 



organic matter in 73 



origin 46- 70 



oxygen ratio 77 



properties 74 



water in 8U- 82 



varieties 51 



Clay manufactures of Ohio 88 



Clays of Ohio 45- 54 



Clay working— 



/ blistering 81 



bloating 81 



burning 79-1 12 



drying 166 



grading 97 



grinding 96, 141 



pressing 151 



screening 144 



tempering 147 



testing 82 



washing 82- 98 



Cleveland shale 21- 22 



Cliff limestone of Ohio 20 



Clinton group 10 



fossils of. 516 



g-s and oil in 10 



