Hearings on S. 7723, to regulate hours of employment and safeguard health of females employed in District in any mill, factory, manufacturing or mechanical establishment, or workshop, laundry, bakery, printing, clothing, dressmaking or millinery establishment, mercantile establishment, store, hotel, restaurant, office, or where any goods are sold or distributed, or by any express or transportation company, or in transmission or distribution of telegraph or telephone messages or merchandise, Jan. 31-Feb. 4, 1913.