156 Half a mile south of the en- (1000) trance to the Reeves farm, a road leaves the creek road, and goes half a mile eastward to the farm house of P. L. Mudd, just beyond a fork of the road. Mudd's house is on the south side of the road and a short dis- tance east of the house a small run comes down from the hill side. From the road the follow- ing section was measured going up the run. 20 feet of green clayey rock. 13 feet of the thin bedded rock representing the Madison bed. 5 feet of bluish clayey limestone with some Silurian fossil. a little over 2 feet below the Coniferous, Pleuroto- maria tr'incta is quite common. Arthri bipartata occurs with occasional of the Devonian. 11 7/3 feet of Ostracoderm rock are exposed. Within 12 inches of the bottom are Helisphyllum Halli, Bletisphyllum pr. mississ., stems of Dolato- crinus, The heavy chert layer occurs 2 feet 4 inches below the black slate. 51 157 A little east of P. L. Mudd's (1000) farm house, a road leads south up the hill to another farm house. In a gully east of this road (same) Pleuroto- maria belli'incta is com- mon is a dark blue layer about 2 foot thick, found 16 feet below the black slate, or a- bout 4 1/2 feet below the base of the Coniferous which has is not exposed. Above the Pleu- romaria rock the measured clay shows at least 2 feet of material with rather numerous Concinnatus & crimp fossils. 158 Going from the last locality southward up the hill ridge and the drive into the next valley, the Lower Silurian is found exposed in the stream beds. At points the dip in- creases from 16 to 22 degrees dipping to the north, the strike