“ On and after June 1, 1933, the defendant, the City of New York, its employees and agents, and all persons assuming to act under its authority, be and they are hereby enjoined from dumping, or procuring or suffering to be dumped, any garbage or refuse, or other noxious, offensive, or injurious matter, into the ocean, or waters of the United States, off the coast of New Jersey, and from otherwise defiling or polluting said waters and the shores or beaches thereof, or procuring them to be defiled or polluted as aforesaid. ”

“ That either of the parties hereto may, irrespective of the filing of the above-described reports, apply at the foot of this decree for any other or further action or relief, and this court retains jurisdiction of the above- entitled suit for the purpose of any order or direction, or modification of this decree, or any supplemental decree, which it may deem at any time to be proper in relation to the subject-matter in controversy. ”