Just below Renix Creek is a well marked syncline which was plotted. graphed. A little farther down is a very strongly marked anticline. At Renix creek the Jessen or Madison beds do not appear at all. The line up riverver at the anticline farther down the river, at Renix creek there are 56 feet of rock exposed above the fossiliferous limestone beds. Does this mean that in the Renix Creek syncline a greater thickness of Madison beds was preserved than for quite a dis- tance up the river. At Rock House the Rock House cherty bed is preserved, at Farley's Landing, the Farley's landing fossiliferous limestone, and at Renix creek, the Renix's creek upper Madison beds. This indicate a thickening of the beds in series in this direction. Set 6 8) Below Alexander Bar, just be- fore reaching the bend of the river, 9) 10) There is a strong dip of the arches 11) 12) and stream then they are nearly level for a long distance. Apparently, a very anticline structure in the nearly level axis. Monday July 31, '99. About a mile above Burkeville on the south side of the river, the follow- ing section is exposed. Black Shale (About 156 ft. above river. 44 ft. about to base of Black Shale. 24 ft. additional to top of fossil- iferous layer. A, 88 ft to heavy limestone with chert 156 44 112 A. This is the typical fossiliferous layer. The upper 1-1½ft. of limestone is dense and massive. The shaly cherty limestone below contains foraminella bundles, Pterinea, + Arthrin. occidentalis. 1 ft. thick. Beneath is limestone with banding diptyrans.