384 PETROLEUM AND NATURAL GAS. 



Thickness Total 



Feet. Feet. 



Red rock 245 300 



Slate 100 400 



Sand, Little and Big Dunkard 250 650 



Lime 25 675 



Slate 10 685 



Sand, Gas 20 705 



Slate 15 720 



Sand, Second Cow Run 50 770 



Red rock 25 795 



Lime 40 835 



Slate 8 843 



Coal, Mercer 3 846 



Sand, Salt 35 881 



Lime 10 891 



Slate 20 911 



Lime 5 916 



Sand, Salt 30 946 



Coal 4 950 



Lime 10 960 



Sand, Salt 60 1020 



Slate 15 1035 



Sand, Salt 30 1065 



Slate 30 1095 



Sand, Salt 80 1175 



Slate 3 1178 



Lime 15 1193 



Sand, Salt 10 1203 



Lime 25 1228 



Slate 50 1278 



Red rock 90 1368 



Lime , 50 1418 



Slate 20 1438 



Sand 40 1478 



Red rock 10 1488 



Lime ' 20 1508 



Slate 10 1518 



Lime 35 1553 



Red rock 60 1613 



Big Lime 26 1639 



Sand, Big Injun 200 1839 



Slate 10 1849 



Lime .' 40 1889 



Slate 20 1909 



Lime 21 1930 



Sand, Weir 10 1940 



Slate 10 1950 



Lime 40 1990 



Slate 20 2010 



Lime 30 2040 



Slate 10 2050 



Sand, Berea 35 2085 



Slate 15 2100 



Shells 40 2140 



Slate 10 2150 



Sand, Fifty-foot 25 2175 



