INDEX. 
143 
McLain's bank, coal from, analysis of 96 
coal of, section of 93 
Mahoning sandstone, correlation of 21, 49 
Manifold mine, coal from, analysis of 96 
coal of, section of 92-93 
Manifold sand. See Big Injun sand. 
Manifold wells, data on 46 
Manufacturers Light and Heat Company, 
operations of 45-47 
Map, geologic, of quadrangle Pocket 
Mapletovvn, coal near, analyses of 104 
Mapletown coal, correlation of 49 
depth to 70-87 
Mauch Chunk formation, occurrence and 
description of 11,25-27 
oil and gas sands in 49 
sections of 26 
unconformity between Pottsville and ... 27, 42 
Meadowlands, oil storage at 47,61 
Meadowlands mine, sections of 93 
Meridian marks, location of 138 
Miller (J. M.) well, section of, figure showing. 22 
Mineral resources, description of 42-134 
Mississippian rocks, occurrence and descrip- 
tion of 25-30 
Mitchell, (A. C.) well, record of 26,30,117 
section of, figure showing 22 
Monongahela formation, limestones in 119-121 
occurrence and description of 11 , 15-19 
oil and gas sands in 49 
sections of 1 5-17 
Monongahela Gas Company, operations of . . 47 
thickness of 18 
Moniger's (J.) bank, coal of, section of 1 12 
Morgan Oil Co., development by 45 
Morgantown sandstone, correlation of 21, 49 
Morris Township (Greene County), wells in, 
records of 72-73 
Morris Township (Washington County), 
wells in, records of 72-73 
Mount Morris limestone, occurrence and de- 
scription of 121-122 
Mountain sand. See Big Injun sand. 
Murphy sand, correlation of 21, 49 
occurrence and description of 49 
N. 
Nineveh syncline, location and description 
of 41 
Nineveh Thirty-foot sand, correlation of. . . 49 
North Franklin Township, wells in, records 
of 74-75 
North Strabane Township, wells in, records 
of 74-77 
Nottingham mine, coal from, analysis of . .. 96 
coal of, section in 95 
Nottingham Township, wells in, records of. 7<i-77 
O. 
Odell, limestone near, section of 127 
Oil, character of 65-66 
development of, history of 44-47 
distribution of 42-44 
map showing 43 
occurrence of 10-11, 42-88 
mode of 48 
theory of 62-65 
Page. 
Oil, origin of 65 
production of 59-62 
rocks containing 47-59 
Oil and gas fields, distribution of 42-44 
distribution of, map showing 43 
Oil and gas sands, names and correlation of. 49 
Oliphant (F. II.) on natural gas 66 
Orton, Edward, on oil and gas occurrence.. 62 
P. 
Patterson's bank, coal from, analysis of 97 
Pencil cave, occurrence and description of. 27 
Pennsylvanian rocks, occurrence and de- 
scription of 15-25 
People's Light and Heat Company, develop- 
ment by 45 
Permian rocks, occurrence and description 
of 11-15 
Petroleum. See Oil. 
Philadelphia Company, operations of 47 
Pigeon Creek, reservoir on 131, 132 
Pigeon Creek syncline. See Waynesburg 
syncline. 
Pinhook coal. See Waynesburg coal. 
Pittsburg coal, analyses of 96-97 
area of, map showing 89 
depth to 70-87 
development of 98-101 
occurrence and description of 10, 88-101 
outcrop of 10 
view of 128 
persistency of 11 
qua lit v of 95-98 
relation of Gantz sand and, figure 
showing 53 
sections of, figures showing 92 
structure of 38-42 
thickness of 91 
water in 134 
Pittsburg sandstone, occurrence and de- 
scription of 128 
Pocono formation, occurrence and descrip- 
tion of 11,28-30 
oil and gas sands in 49 
water in 133 
sections of 28-29 
Pollock triangulation station, location of.. 135 
Portland cement, limestone for 118 
Pottsville formation, occurrence and de- 
scription of 11,25 
oil and gas sands in 49 
unconformity between Mauch Chunk 
and 25,27 
water in 133 
Productive Measures, occurrence of 15,24 
Prosperity limestone, occurrence and de- 
scription of 12, 128 
R. 
Railroads, routes of 9, 10 
Records of wells 70-87 
Redstone coal, analyses of 102, 103 
occurrence and description of 101-103 
section of, figures showing 102 
Richards (H. H.) No. 1 well (293), data on . 59 
Roger's bank, coal of, section of 112 
Ryerson Station, coal near, analysis of 115 
