ma 



INDEX. 



Coal— PAGE 



origin 256 



value -67 



waste 268 



Coalfields of Ohio 255 



areas— (see preface) 255 

 maps — " 256 



Coal measures of Ohio '60-270 



Coal measure conglomerate 271 



limestones 260 



Coal seams of Ohio 259 



mode of growth .. 262 



numbering 269 



Conglomerate group in Ohio 36 



Cook, Prof. Geo. H 74 



Copper in drift 38 



Corniferous limestone 18 



fossils 419 



Cuyahoga shale 31-5^-508 



Dawson, Sir J. Wm 26 



Dayton limestone 12-518 



Delaware limestone / 19 



Devonian limestone in Ohio 18-419 



Drift, glacial 37 



Earth works, Prehistoric II- 5 



Earthenware 89 



clays 90 



' statistics 91 



East Liverpool 126 



Erie shale 21-506 



Euclid blue stone 28 



Feldspar, the source of clay 47, 72 



Fire brick 217 



Fire clays 52-218, 224 



analyses 136 



Fishes, fossil — Chapter on 602 



Flint clay , 218 



analysis '. 219 



origin. 75 



Flooring tile 240 



Foerste, Dr. A. F.— Chapter by 516 



Fort Ancient, II 12, 31 



Fossil fishes of Ohio 602 



Fossil wood 25 



Freeport coals 279 



Frey — Sheckler machiuery 142 



German clays 231 



Glacial drift of Ohio 37 



Glass-pot clay 231 



Glazes in pottery 103-108 



Guelph division of Niagara 13 



Gypsum in Ohio 13 



Hall, Prof. James 494-497-500 



Hamilton shale in Ohio 20 



Harris brick works 64 



Herrick, Prof. C. L., Chapter by 495 



Hertzer, Rev. H 602-604 



Hildreth, Dr. S. P 496 



Hillsboro sandstone 12 



Hollow goods manufacture 209 



Hudson River group in Ohio 8 



brick clay in 56 

 Huron shale 21- 22 



Iron in clay 72 



effects of '2 



Kaolin 47-48, 32-70- 76 



Kaolinite base of clay 74- 80 



Kilns- 

 Camp's 186 



Endaly's 187 



Hallwood's 187 



Yates's I 87 



eartheuwdre 91 



paving block , 177 



stoneware H2 



testing 84 



Kinderhook group in Ohio 512 



Kittanning clays .....' 65 



Kittanning coals 278 



James, Prof. J. F 5 



"Jolly " or "jigger" in clay working 102 



Lime in clay „ 73- 79 



Limestones in Coal Measures 260 



Logan conglomerate 287 



Logan group 31- 32 



Logan fire clay «... 58 



Logan sandstone 34 



Lower coal measures 36 



Lower Helderberg limestone 14 



Lunette pyrometrique....85, 110, 138, 254 



l 



Magnesia in clay 73- 78 



Marcellus shale in Ohio 432 



Marquette iron ore in drift 38 



Massulon coal 273 



Medina shale 9 



Meek, F. B 30-408 



Meigs' Creek coal 288 



Mercer clays 62 



Mercer coals 274 



Mica in clay 72 



Miller, Dr. S. A 627, 636, 637, 670, 682 



Mineral Point clay — analysis 66 



Minshall, F. W 44 



Monclova sandstone 17 



Moores, Henry 409 



Mounds in Ohio— II 5- 28 



age 38 



effigy 16 



Mound builders — 28 



social organization 32 



Newberry, Dr. J. S 21, 24-28-29, 269 



[272-280, 602, 603, 604 



Niagara group in Ohio 11 



divisions of 12 



Niagara shale 56 



Non-plastic clay 53- 75 



North Industry shale — analysis 64 



Oak Hill fire-clay 66 



Ohio shale 21 



divisions 25 



source of sewer-pipe clay 57 



Oil as fuel 109 



Olentangy shale 20 



