‘TABLE OF CONTENTS. 
PAGE 
CHAPTER I. The Stratigraphical Order of the Lower Coal Measures of 
Ohio By <hidiward*Onrtoneeeenncascn ceccse ones eae mee eee 1- 128. 
The Mercer Limestone, 13; the Ferriferous [Linaxesttorne, 16; the Freeport 
Limestone, 21; Sections of Mahoning Valley District, of pte Sandy Creek 
Valley, 63 ; of the Lower Tuscarawas and Muskingum Valleys........... . ol 
CHAPTER II. The Coal Seams of the Lower Coal Measures of Ohio, in part.— 
By) HdiwardviOrton <.c-:cicccuseccts seston cececem nance ence tee 129- 168 
Methods of Designating Coal Seams, 129; The Ohio Coal Field, 134; Dip of 
the Coal Measures, 138; Partings, Roof, Floor, and Joints of Ohio Coal 
Seams, 140; Classification of Ohio Coals, 144; Composition of Ohio 
Coals, 146; Uses of Ohio Coals, 150; Preparation of Coals for Market, 
153; Proportion of Coal Lost in Mining, 155; General Characteristics 
of the Several Coal Seams. ics sesaecc. ecetees ee neeoee eeer eeee eee 156 
CHAPTER III. The Coal Seams of the Lower Coal Measures of Ohio (Con- 
NAVE OU)s——Aodry IOSly em OVAKOTA 446000000000000 0000004000000002100 000000000 169- 300 
Coal Mines of Mahoning County—175; of Columbiana Co., 185; of Jeffer- 
son Co., 207; of Portage Co., 226; of Stark Co., 229; of Carroll Co., 244; 
Opi IMEC EHS CO PATHS Cit (CMGI (CL) acocacccascoaq.000 45000005'00000800000000006 282 
CHAPTER IV. Coal Mining in Ohio.—By Andrew Roy, State Inspector of 
MING 8% 2s e.daseosbesesctivc sce arsine nce caaies cowaumtnemeine ane sseenenen een seeetinee 301- 370 
Early Coal Mining in England, 301; Different Systems of British Mining, 
305; The Ohio Field, 317; Conditions of Mining in Ohio, 324; Manner 
of Mining, 328; Labor-Saving Machinery in Mines, 339; Coal-Cutting 
Machinery, 342; Examples of Good Mining Practice, 346 ; The Ventila- 
trom: Of. Mimesiesscncieherceccceaceetes oes cdaeelh oie. cane eeen team a een ae ease c neeeeee 359 
CHAPTER V. The Iron Ores of Ohio—By Edward Onion Wreaa eee Ree 371- 435 
Classification of the Ores of the Lower Coal Measures, 375; Geological 
Order of the Iron Ores, 378; Geographical Distribution of the Iron 
Ores, 380; Iron Ores of Trumbull and Mahoning Counties, 382; of Co- 
lumbiana Co., 384; of Tuscarawas, Stark and Carroll Counties, 386; 
Blackband of Holmes Co., 399; Iron Ores of Muskingum, Licking, and 
Northern Perry Counties, 402; of Southern Perry and Hocking Coun- 
ties, 405; of Hanging Rock District, including the Counties of Vinton, 
MExeiestorn, (Celle, Ian ata GAG! ISONOLO 260600000600000000000000 09000080000000000 800000 416 
CHAPTER VI. Iron Manufacture of Ohio.—By N. W. Lord..................60 438- 554 
General Conditions, 438; The Manufacture of Iron in Ohio, 447; The 
ITEM gearacony Gay oy abel O)0V0)5656005a0080 64006068000000000 900060 460980005660005060000 600000 497 
CHAPTER VII. The Manufacture of Coke.—By Henry Newton. E. M ......555- 576 
Composition of Coke, 558; Methods of Manufacture ....................c0eseeeee- 560 
CHAPTER VIII. Building Stones of Ohio. (From Advance Sheets of the Re- 
port of the Tenth Census of the United States on Building 
Stones and the Quarry Industry). — Compiled from Notes 
of Professor Orton. 
IT ISEN IYO ISRWON YES) “Gonaoaqbeqc964d0960006060000400008500060000000040000 90000080000005000000. 000000000 578 
II. Limestones ....... ibinavdse adeses.cusiens diese ssaenum ener onedseterese ces enocensenecscnces 608 
