The provision for a condition may be so worded that it is evident that the condition is inserted for the benefit of both parties; and in such case either party may take advantage of such breach.1 The option to terminate a contract may be intended for the benefit of the vendee or lessee. A provision, "In case no well is completed within thirty days from this date, then this grant shall become null and void, unless second party shall pay to first party thirty dollars each and every month in advance, while such completion is delayed," gives the option to the lessee either to keep the lease alive by making such payments, or to terminate it by refusing to make them.2