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[[left margin, circled]] 10 [[/left margin]] May 20 Iowa farm (Roll 2 color F7, F8 just N of Mason City, W side US65 [[insertion]] 335b [[/insertion]] 6632 - Abandoned Qy on N side US20 1/2 mile E of intersection with Iowa 150, E edge of Independence, Ia Small quarry showing about 3-4 feet of Independencis zone and about 10' of profundum zone. Large Atrypa abundant, Gypidula very rare. Small channel of probable Independence shale. = loc 6633=335d [[left margin]] 335c-6632a - Same as 6632 but from the profundum zone - base of this zone with many Cystiphyllum [[/left margin]] [[insertion]] 335e [[/insertion]] 6634 - large quarry exactly 1 mile on U.S. 20 east of its junction with Ia 150, on south side of road. Section has Davenport, and Solon with a thin independencis zone and possibly 10' of profundum zone. Called on Mr Levorson in morning. 6635 coal from sink in 6634.