Where the term "oil and gas" is used in §§ 5-7-19 to 5-7-33 , inclusive, it shall be construed to mean "oil, gas, and casing - head gas." Source: SDC 1939, § 15.0510 as added by SL 1941, ch 53 , § 1.
Oil and gas leases--Casing - head gas included
SDCL § 5-7-18 — under MINERALS ON SCHOOL AND PUBLIC LANDS.
SDCL § 5-7-18