Section 10
SEC. 10. The Chief Statistician may authorize the expenditure of sums necessary for traveling expenses of the officers and employees of the Bureau and the incidental expenses of printing the carrying out of this Act, including the expenses of printing the necessary forms, schedules, blanks, circulars, envelopes and other necessary items; and for printing, publishing, and distributing bulletins and reports of the results of the investigations authorized; and for purchasing or contracting for the use of mechanical or electrical devices for calculating or tabulating: Provided, That no mechanical device of this character shall be adopted until after due notice to the public and tests of its merits in competition with other devices for the same purpose which may be offered, unless the same shall have been previously adopted in some Department of the Government of the United States.