[Heterospongia (See below)] be the remainder of the Madis- son section but there is room to rough for Clinton: Wavely shale Black Shale, 35 feet measured, 39 ft. estimated. Unknown. Thin bedded Madison, Heavy Madison, X Bryozans. About 1/2 mile north westward of last section is the second creek coming in from NE side of river, since pass- sing Thomas Creek. Here some large bryozans were found near lower part of massive Madison beds, and t-here we sent to G.O. Ulrich. Mr. Joseph Morrow, Rankin, Wayne Cr, was present on this trip. See section above to which this fact was added. bryozans = Heterospongia subramosa, Ulrich. Rained nearly all day. Tried to buy a wheel for our boat. Anna went back with us. Rock rise on going west to top of anticlinal. See next days work! They evidently has been a rise of 60 feet for the base of the Black Shale from Thomas branch to the creek just E. of the anticline. Base Black Shale 572, Sunday July 23:99. Anticline near middle part of course of river where it flows westward, a short distance further west it begins to flow southward. The for- miferous beds below the Madison are brought up by the anticline. The axis of the anticline is a short dis- tance east of the main bend of the river, changing from a northerly to a southerly course. At the axis of the anticline the section as far up as the massive Madison beds is exposed. Up the first stream going westward and then up a small branch coming in from the north, The section is continued up to The Black Shale. The combined section is given below: Base Black Shale 625 42 ft. Barometric. Prof. Miller Black Shale. 32 ft. Madison beds, Upper part thin bedded 9 feet heavy 4 ft. Transition beds to Madison 17 feet of Richmond beds.