222 RECORD OF DEEP- WELL DRILLING FOR 1905. 
Rocks of Permian age outcrop in the higher ground about Strong City, but the rocks 
penetrated by this well all belong to the Pennsylvanian series (Coal Measures) of the 
Carboniferous system. Owing to the imperfect character of the log above 1,500 feet, it 
is not possible to correlate the formations with those that outcrop in the State farther to 
the east. 
Record of well in the SE. \ SE. £ sec. 17, T. 19, R. 8. 
Feet. 
Bowlders and clay 0- 8 : 
White slate, brown sandstone, white slate, and red sandstone 8- 20 
Slate 20- 26 
Gravel; caves 26- 28 
Green shale ; caves 28- 30 
Blue slate 30- 40 j 
Flint 40- 46 ] 
White slate and shelly slate 46- 11C 
Black shale, muddy; caves 1 10 12C 
Slate and muddy slate ; caves 120- 14£ 
Limestone, slate, limestone, slate, and limestone 145- 21C 
Red shale; caves 210- 221 \ 
Slate • 225- 23( I 
Black shale and black limestone 230- 241 
Slate, blue slate, limestone, white slate, limestone, and white slate 245- 34< ■ 
Gas sand ; gas burned 4 feet high 340- 34' 
Fine sandstone; salt water 349- 35 ] 
Shelly slate 354- 37 
Black and sandy shale 370- 38 j 
Slate, sandy slate, and shelly slate 380- 44 I 
Black shale '. . 445- 45 > I 
Shelly slate, limestone, brown shale, shells and limestone, brown shale and 
shelly slate '. 45.5- 56 i ] 
Black limestone 560- 5£ i j 
Slate, limestone, and slate 595- 7( t 
Green shale 700- 75 1 
l 
Limestone, white slate, sandy shale, slate, limestone, and slate 720- 8' : 
Sand ; salt water 845- 8( [ 
Sandy slate, dark-blue slate, and white slate 860- 9' ( 
Sand; salt water 900- 9 
White slate, shale, and limestone 920- 9 1 
Sand; salt water 995-1 , 
Black shale 1 , 000-1, ; 
Sandy shale and white shelly slate 1, 015-1, 1 K 
Sand; salt water 1, 100-1 , 1 j 
Black shale and black limestone 1, 135-1, 1 1 
Sand; salt 1, 150-1, 1 
Black shale and black limestone 1 , 18.5-1 , S 
Shale, sandy shale, white slate, and shelly slate; salt water at 1,350 feet 1, 200-1, \ | 
Slate and sandy slate 1, 350-1, < \ 
Black sand 1, 430-1, 
White sand, sand (salt water) , fine black sand 1 , 432 I, • I 
Light sand, white sand, dark sand, fine light sand 1 , 460-1 , \ 
Black shale 1, 490-1 , 
Sand; salt water 1 1 , 49.5-1, 
Brown and gray limestone and gray shale, 35 feet; brown limestone and gray 
shale, 20 feet 1, 500-1, 
