Packing-house products. Designation of quality of canned goods, hearing, 70th Congress, 2d session, on S. 4800, to amend sec. 8 of act for preventing manufacture, sale, or transportation of adulterated or misbranded or poisonous or deleterious foods, drugs, medicines, and liquors, and for regulating traffic therein, and for other purposes, as amended, Feb. 7, 1929.