pt. I. The scope of radio control: The trend of radio. European progress in radio control. The Radio act of 1927. State and municipal regulation. Copyright and radio. Slander by radio. Procedure before the Federal radio commission. A new world code for radio. Control of radio in time of war. pt. II. Radio regulation: Text of the federal Radio act of 1927; supplemental acts of 1928 and 1929. The Washington international radiotelegraph convention and attached regulations. Drafts of suggested ordinances. pt. III. Appendix: The Geneva radio congress of 1927. The North American radio conference of 1929. The 1929 conference at Prague.