AN ACT MAKING AVAILABLE, OUT OF ANY UNEXPENDED BALANCE OF THE APPROPRIATIONS FOR THE BUREAU OF PUBLIC WORKS MADE IN ACT NUMBERED THIRTY-SIX HUNDRED AND THIRTY-EIGHT, THE SUM NOT EXCEEDING EIGHT THOUSAND PESOS FOR TRANSPORTATION AND TRAVELING EXPENSES OF ONE OR TWO DELEGATES TO THE INTERNATIONAL ROAD CONGRESS TO BE HELD IN WASHINGTON IN OCTOBER, NINETEEN HUNDRED AND THIRTY.