. . "if settlor husband's son, Brian M. Wicklund, is not then surviving, this gift shall lapse and be distributed according to the provisions of paragraph TWELFTH below.B. Any and all interest of settlor, or either of the persons herein designated as settlor, or this trust, in and to oil, gas and other minerals in and under and that may be produced from the following described lands, located in the Sta" . .