Potomac River. Restriction of use of shores and waters of Potomac River in District of Columbia, report to accompany S. J. Res. 182 [prohibiting location or erection of any wharf or dock or artificial fill or bulkhead or other structure on shores or in waters of Potomac River within District of Columbia without approval of commissioners of District of Columbia and director of public buildings and public parks of National capital]; submitted by Mr. Glass.