Sec. 12. A reversion is the residue of an estate left in the grantor or his heirs, or in the heirs of a testator, commencing in possession on the determination of a particular estate granted or devised.
Reversion; definition.
Mich. Comp. Laws § 554.12, under Revised Statutes of 1846.
Mich. Comp. Laws § 554.12