Friday July 28. '99. Black Sh. 670 Section above Rock House Natural Bridge. 20 feet to top of hurt, not exposed, 44 ft. of sandstone rock, once a sandy limestone. 19 ft. of Waverly shale, harder, forming cliff. 77 ft. of Waverly shale breaking down. 7 ft. Limest. weathering rusty brown. 21 ft. Waverly Shale. Black Shale. Typical Black Shale. 37ft total Base of Bl. Shale weathering off 5 ½ feet of solid thin limest. C. Shrinkled Madian D Heavy Madison Clay beds with fossils rather in drift masses not forming sand beds. Plenty of free lumps to 73 ft in clay rock. Only str jured above. 49½ft. to roof of Bridge 27½ft to top of richly fossiliferous beds Bilhumond 11ft. to base of Bridge Set 5 8. Time, large spy. I view from top of cliff above 9. Indiananians. Bridge. Looking south towards Cuelano, showing road bottom included in V shaped course of river, looking towards Cuelano, a few miles in distance on left side of river. The river course is indicated by the long line trees. The hill on left of these are the plateau margin through which the river has cut. 10. View my stream. View from cliff above Bridge. 11. First view of cat fish while man array 12) with jerk it was caught 2 hours later. Explanations of section in preceding page, F. From river bank the base of Black Shales cliff is seen to weather + form a sort of soil. E. Residual layer, hardly 2 inches more like SS. C. This at me corresponds to the 1st case in which I found Siphonopsis. It is very finy and dense, and contains very small fossils which I do not recognize. Among these fossils are gastropods. This at me corresponds lithologically best with the gastropod layer, near Madison, Indiana. D. Judging from amount exposed vertical sided cliff when it could not be measured, 1 to the close is about 12 ft. This number is partly secured from a previous section & top preceding,