194 
INDEX 
Page. 
Mclntire, R. M., well of. 104 
McIntyre pool, description of. 36 
McKim, John, well of, log of. 105 
McLean, J. F., well of, log of. 99 
McNary, James, well of. 133-134 
Mahoning sandstone, character and distri¬ 
bution of. 80 
Mansfield syncline, location of.53-54 
Maps, construction of. 23-25 
Martin, James, well of, log of. 112 
Martin farm, well on, log of. 109 
Meigs coal, character and distribution of.... 87, 
89,91,93,94,97 
position of.91,94,97 
use of, as key horizon.27-28 
See also Sewicklev coal. 
Mercer coal, character and distribution of.. 82 
Metcalf farm, well on, log of. 110 
Middle Kittaning coal, character and distri¬ 
bution of. 81,89,96 
Middle Washington limestone, character 
and distribution of. 74,149, 
151, 152-153, 155-156, 158-159,161,164, 
168-169,171-172,174-175 
Miller, D. C., well of, log cf. 139-140 
Mingo svncline, location and description of. 29 
Monongahela formation, character and dis¬ 
tribution of. 67, 
68-71,116,128-130,153-154 
Moore, John, well of, log of. 144 
Morris Township, Pa., detailed geology of. 172-175 
Morrow, Emma, well of, log of. 102 
Morrow heirs, wells of. 102-103 
log of. 103 
Mount Pleasant Township, Pa., detailed 
geology of. 127-130 
Mountain sand, occurrence of. 112 
Munn, M. J., work of. 10 
N. 
New Cumberland anticline, location and 
description of. 28 
oil in. 34 
Nicholson farm, well on, log of. 105 
Nineveh coal and limestone, character and 
distribution of. 78-79,173 
Nineveh syncline, location and description 
of. 53 
Nineveh Thirty-foot sand, character and dis¬ 
tribution of.'. 85 
North Fayette Township, Pa., detailed geol¬ 
ogy of.. . 116 
North Franklin Township, Pa., detailed 
geology of. 170-172 
O. 
Oil, accumulation of. 15-16,17-21 
occurrence of, theory of. 11-21 
origin of. 13 
percolation of. 14,16 
See also Sandstones, oil-bearing. 
Oil pools, descriptions of. 34-36,46-47,58-62 
distribution of, plate showing. 26 
Oil wells, location of, maps showing. 
Pocket (Pis. VI, IX, XIII) 
Owens, John, well of. 102 
Page. 
P. 
Palmer, J. L., well of. 108 
Parkinson farm, well on, log of. 137-138 
Parr, S., well of, log of. 104 
Peterson farm, well on. 105-106,132-133 
log of. 132-133 
Pittsburg coal, character and distribution 
of. 68 , 87-88, 89-90, 91-92, 93, 94, 
95,98,99,105,108,110-112,114- 
116, 119, 122, 126-127, 131,154 
contour map of. Pocket (Pis. Ill, VII) 
description of. 28 
formations above, description of.79-86 
formations below, description of.68-79 
position of. 88 , 
91,92,94,98,119-123,125-127,129,132-144 
structure of, maps showing__I.. 
Pocket (Pis. Ill, VII) 
use of, as key horizon. 27-28,38-40,50-51 
Pittsburg limestone, character and distri¬ 
bution of.... 123 
Point Lookout oil pool, description of. 61-62 
Pottsville formation, character and distri¬ 
bution of.82-83 
formations below. 83-86 
Price farm, well of. 103 
Prospecting, results of. 13 
Prosperity limestone, character and distri¬ 
bution of. 77,157-158,166,170 
position of. 49 
R. 
Rea, J. V., well of, log of. 137 
Redstone coal, character and distribution 
of. 69,118-119,122 
Reinhart. M., well of, log of. 103 
Rider coal, character and distribution of... 119 
Roberts, F., well of. 104 
Robinson Run, sections on. 167,169 
Robinson Township, Pa., detailed geology 
of. 116-117 
Rocks, character and distribution of. 68-86 
Rocky Run, oil prospects on. 64 
Roger coal, character and distribution of... 81, 
88-89,90,95,96,105 
Russell, William, well of, log of. 141 
S. 
Salt sand, character and distribution of... 82-83, 
100,102,103,110-112 
fluids in. 16 
gas in. 33,36-37,44,62 
position in. 117,120,123,129,132-146 
Salt water, occurrence of. 35-36,58,61,63,64 
source of. 17 
Sands, oil. See Sandstones, oil-bearing. 
Sandstone, origin of. 18 
Sandstones, oil-bearing, character of. 12 
depth of. 12 
measurement of. 29-30,51 
diagrammatic section of, explanation of. 15-16 
plate showing. 16 
extent of. 12-13 
mapping of. 9,25 
names of. 27 
occurrence of. 33 ; 43-45 
