24 limm only as far up as 792, Interval without expn. accre up to 799 Bishn bke rock Cms next, at next level 807 there is clays and a more coarse grined layer, At next level there is a fine grained line the like that in which I found Pentamers else where. 816, Next up to the coisted rocks 822. White limestone, in part dense, and in part brecciated at 844? Highest ex of mine: 849 Top of land = 854 4) 6.6 16.5 West of Porter's Mill. Road corner 853 B. turnpike, Whiteal mines 844 (Top of bluff 887 Base of projecting ledge, 829 Cladiprace 819-823 Base of limestone 816 Bridge at Mill 801) East of Porter's Mill. Opposite house 860 Base of limestone rock, 843 Top of strata projecting rock. 838 Base of arch above face 834 Top of falls 828 Base massive l. 817 Clapp Base of top expn. 811 Bairbridge Ohio quarry 3/4 mi SE by turn center. Top 1160 Sunbury exposed 12 ft. 1198 Berea exposed 14 1/2 ft 1134 Bedford + unexp. (65 ft. (soft clay at base of Bedford) 1030 Black shale calcinated 290 740 25