(b) With respect to those articles of this Convention that come within the legislative jurisdiction of constituent States, provinces or cantons which are not, under the constitutional system of the Federation, bound to take legislative action, the Federal Government shall bring such articles with a favourable recommendation to the notice of the appropriate authorities of States, provinces or cantons at the earliest possible moment; (c) A Federal State Party to this Convention shall, at the request of any other Contracting State transmitted through the Secretary-General of the United Nations, supply a statement of the law and practice of the Federation and its constituent units in regard to any particular provision of the Convention showing the extent to which effect has been given to that provision by legislative or other action. Article 38 reservations 1. At the time of signature, ratification or accession, any State may make reservations to articles of the Convention other than to articles 1, 3, 4, 16 (1) and 33 to 42 inclusive. 2. Any State making a reservation in accordance with paragraph 1 of this article may at any time withdraw the reservation by a communication to that effect addressed to the Secretary-General of the United Nations. Article 39 entry into force 1. This Convention shall come into force on the ninetieth day following the day of deposit of the sixth instrument of ratification or accession. 2. For each State ratifying or acceding to the Convention after the deposit of the sixth instrument of ratification or accession, the Convention shall enter into force on the ninetieth day following the date of deposit by such State of its instrument of ratification or accession. 1954 c o n v e n t i o n • stateless persons 21