2. These powers are appendant, as where a tenant for life has a power of making leases in possession. They are in gross when a person has an estate in the land, with a power of appointment, the execution of which falls out of the compass of his estate, but, notwithstanding, is annexed in privity to it, and takes effect in the appointee out of an interest appointed in the appointer. 2 Bouv. Inst. n. 1930.