. "the following reqirements: (a) the representations are to be on white paper or other material suitable for reproduction; (b) the sheets of representations are to be ???he same size as those used in the application; (c) the representations are to be prepared in durable dark lines Isuitable for reproduction; (d) the representations are to appear on only 1 side of a sheet; THE LAWS OF BARSAWS l???rin" . . .