such stratum. The plaintiff contends that the production rights contained in the 1936 lease to the Big Lime stratum have not been affected by any subsequent agreement to which it was a party, and that such rights are not affected by the subsequent grant of storage rights in that stratum to United by the 1949 lease.
The plaintiff contends that its exhibits, and particularly Exhibit No. 4, the 1949 lease between United and plaintiff's predecessor in title, were offered for a limited purpose, and that on demurrer such an exhibit can not nullify an allegation of the bill which it was not offered to support, whatever may be its effect upon the final hearing of the cause upon its merits, citing Donahue v. Rafferty, 82 W.Va. 535, 96 S.E.agreement between Cabot and United was not made a part of the 1949 agreement between plaintiff's predecessor in title and United. However, in the third whereas clause of the latter agreement, Exhibit No. 4, this specific reference is made to the agreement of May 8, 1948, Exhibit No. 3, between Cabot and United: "* * * subject to lessee's securing the approval of Lessor herein, to utilize 795 acres of the above mentioned 2,762.72 acre tract of land (said portion so containing approximately 795 acres, being colored in purple on the map attached thereto and made a part hereof), together with the gas wells located thereon, for the purpose of conducting storage operations in the Big Lime stratum, including the right to drill other wells to said stratum