4. Tenancy by estoppel.

A lease of land is created by estoppel when the grantor or landlord has no legal estate or interest in the land at the time of the grant1; and, although a title by estoppel, such as the landlord or grantor in this case possesses, is good only against the person estopped by his own deed, namely the tenant or the grantee, yet as against the person estopped it has all the elements of a real title2. It has been judicially stated that 'tenancy by estoppel' does not, however, describe an agreement which would not otherwise be a lease or