§ 1267. A term for years may be extinguished by merger. Merger arises "when a greater estate and a less coincide and meet in one and the same person, without any intermediate estate;" 3 in which case the less estate merges in the greater. Whenever, therefore, a tenant becomes possessed of a greater term than that in which he originally held, or whenever he becomes possessed of the freehold in respect of which he is a tenant, the first estate is determined by merger. Equal estates will not, however, merge in each other; for a merger is only produced where a less estate and a greater estate, or a particular estate and the reversion, meet in the same person. Both estates must, however, generally vest in the same person in his own right. But if the lessee be an executor, and purchase the inheritance, his lease becomes merged.4