232. Duration of the term.

The duration of the term must be fixed either by specifying the number of years in the first instance or by referring to some collateral matter which is certain in itself or which is capable of being rendered certain before the lease takes effect1. A lease granted with a provision that the tenant is to give up possession by a certain date is valid, as it will be construed as a term certain to that date with an option to the tenant to determine the lease at an earlier date2. If to a certain term the lease purports to