Pleurotomella umbellata sect. Umbilica umbonata. Byssomychia radiata. Platystrophia Annulodonta gigantea. 4 p.m. S of crossing of Dunville Columbia road over Dawson creek, Oliv's shale. 9 in. Decorated base of Oliv's shale. 1 ft 5 in. Dark sandy l. with D. decorium and small other phyllid crabs. This is the sandy l. exposed both here and Dunville, + recorded in preceding notes; 1 ft 4 in. Limestone, hard, finegrained, with D. decorium, greyish blue 2 in. shale limestone {1 ft 6 in. limestone 3 in. chert horizon, partly free, 1 ft 2 in. dirty limestone. 4½ in. limestone splitting into small Lae layers. {5 4½ in. cherty limestone, partly free, 1 ft 4 in. massive stratum of limestone 6 in parting, probably clayey, weathers out. Oliv 7 in. greenish arg. clay shale, @2d 1 in. irregular hard nodules, same as those found near base of Richm and section at summer house localizing S.E. of Dunville, 2 mi N of Shelbyville, and thence as far as Shelby City. 5 in. greenish arg. clay shale, 2 ft 6 in. stratum with argillaceous lime stone in irregular layers in argile- laceno rock. All but upper 6 in. rather rocky fossiliferous. For making mortar the fossils at this location. 1 ft 8 in. Clay arch of allay, not from limestone limestone in upper 6 inches of stratum, 5 in shale material, weathering into small fragments 8 in arg. limestone. 6 ft arg. rock splitting into irregular thin layers, and vertically into small parallelets. 4 ft 6 in covered. Dawson creek.