Each appointed member of the board shall be entitled to $25.00 per day for each day of actual attendance at meetings of the board, and to his actual and necessary traveling and other expenses incurred in the performance of his official duties. The board may appoint such employees and assistants as shall be necessary for the proper exercise of the powers hereby granted. The compensation and expenses of the appointed members and assistants and employees shall be paid from appropriations made therefor by the legislature. The board shall determine the number of bound copies of the proceedings of the board as it deems necessary for the use of the state, the costs of which shall be paid from appropriations made therefor by the legislature.