41 Abbotts Mill belongs to Swope, 2 miles south of RR crossing over Sulbrend creek, 30" Top of Der. L. with worm burrs. 15" Devonian ferruginous L. ½ ft Orbulary First obole. 19" White clay. 1/2 Ferruginous limestone. 11" White clay 2 3/2 ft Clay with ferruginous limestone layers at various levels. 3ft 4 in. Ferruginous limestone, Partly by alor chint m. 3" Zaphrentis Danf ammon's lay Zaphrentis calyculs Rimicopora frindosa 3 ft 7 in. Ferruginous Chint m. blue clay, at base , at Abbotts Mill, Cyclinema clint meneri, Leptaeia rhomboidalis. Clatherpura frindosa 2ft soft clay shale. 5 sluiced. Base of Black Shale strongly Devonian ironwall in section. 27 1/2 ft up to Derwian. 60' 9 1/2 ft Clay with L. layer at top 25 ft of creek level at grad cross- ing to top of usual lime- stone rubble on grad bed, limestone layer at top. Includes much clay in section