...less. It is agreed that this lease shall remain in full force for a term of years from this date, and as long thereafter as oil or gas, or either of them, is produced from said land by the lessee. In consideration of the premises the said lessee covenants and agrees: 1st. To deliver to the credit...

..."unless lease," which provides that it shall remain in force for a term of five years from its date, and as long thereafter as oil or gas, or either of them is produced from ' the land by the lessee, and which contains the clause that if no well be commenced on said land on...

...• ' It is agreed that this lease shall remain in fore? for the term of ten years from this date and as long thereafter as oil or gas. or either of them, is produced therefrom by the party of the second 795 part, its successors and assigns. In consideration of the...

...force, unless the same is sooner surrendered by the lessee, for a teem of years from this date, and as long thereafter as oil or gas, or either of them, is produced from said land by said lessee, or royalty is paid hereunder, or as long thereafter as drilling operations are being conducted,...

...*. It is agreed that this lease shall remain in force for the term of one year from this date, and as long thereafter as oil or gas or either of them is produced therefrom by the party of the second part, his heirs, successors or assigns. In consideration of the...

...was executed June 1, 1928, for a period of five years "and as long thereafw as oil, gas. and sulphur, or either of them, is produced from said land by the lessee. " Ultimately there will be outstanding against the Government only » one-sixteenth interest in the...