Valuation docket nos. 192, 149, 164, 180 : New York, Ontario and Western Railway Company, Mobile and Ohio Railroad Company...: Valuation docket nos. 192, 149, 164, 180 : New York, Ontario and Western Railway Company, Mobile and Ohio Railroad Company, Charleston and Western Carolina Railway, Norfolk and Portsmouth Belt Line Railway, et al. : memorandum on argument relative to presidents' conference committee general studies.