TRANSFERS CONDITIONED UPON SURVIVORSHIP.

SEC. 607. TRANSFERS CONDITIONED UPON SURVIVORSHIP. In the case of property transferred by a decedent dying after March 18, 1937, and before February 11, 1939, the determination of whether such property is to be included in his gross estate under section 302 (c) of the Revenue Act of 1926 (44 Stat. 70) as a transfer intended to take effect in possession or enjoyment at or after his death shall be made in conformity with Treasury Regulations in force at the time of his death.