Supplemental estimates of appropriation for the Smithsonian Institution. Communication from the President of the United States, transmitting supplemental estimates of appropriations for the Smithsonian Institution for the fiscal year ending June 30, 1924, $1,500, and for the fiscal year ending June 30, 1925, $6,000, for an additional Assistant Secretary of the Smithsonian Institution, amounting in all to $7,500.