ONYX.

as mineral, 81.

ORDINANCE OF 1785.

disposal of mineral lands, 1080.

minerals reserved from sale of public lands by, 1080.
reservation of copper, goid, lead, and silver, 1080.
section 16 dedicated as school lands, 1080.
OREGON.

coal lands excepted from lands donated to settlers, 1087.
enabling act directory as to selection of salt springs, 1269.
excepts minerals, 1268.
grant of salines to, 1268.

salt springs to, 1262.

limited to twelve, 1268.
laws of, extended to Alaska, 873.
minerals excepted from lands donated to settlers, 1087.
mineral lands excepted from wagon road grants, 1276, 1279.
in, reserved from railroad grant, 1129.
no mineral districts within timber-cutting act, 1339.

not included in mining districts under timber-cutting act, 1338.

proof of mineral character of lieu lands, 1269.

salines excepted from lands donated to settlers, 1087.

salt springs excluded from grant where private rights are vested, 1268.
selection by State, 1269.

of lieu lands, 1269.

salines by, 1269.

statute as legislative sanction of miners' rules, 657.

surveyor general, 1087.

time for selection of salt springs, 1269.

of making selection, 1269.

title to coal lands, 1087.

town-site laws not in force in, 1376.
OREGON CENTRAL RAILROAD CO.

minerals excepted from grant to, 1141.

ORES.

See also Intersecting veins, Mineral deposits, Minerals, Ownership, Veins or lodes.
as part of vein, 132.

burden of proof as to ownership, 155.

iron not included in "or other valuable ores," 1083.

locator's right to, without purchasing land, 112.
ownership at intersection of veins, 589, 705.

when veins intersect, 721.
presumption as to ownership, 131.
removing as prima facie trespass, 160.
right to dig passes to heirs, 126.
mine as property, 123.

taxation, 97.

taxes on, enforced by sale, 98.
tunnel owner's right to take, 171.
within space of intersection, 590.

ORIGINAL COAL-LAND ACT.

See also Coal sections, Coal statutes, Mining statutes.

sale of coal lands, 791.

ORLEANS.

lead mines, 1242.

salines, 1242.

salt springs, 1242.

OSAGE INDIANS.

See Indian lands, Oil and gas lands.

oil lands, 1026.

OUSTER.

See also Ejectment, Possessory rights.
upon and beneath surface, 160.
OUTCROP.

See also Apex, Discovery.

minerals need not be exposed to view, 105.

slight deviations do not affect extralateral rights, 138.
synonymous with apex, 105.

OVERLAPPING LOCATIONS.

See also Adverse claims, Conflict area, Conflicting locations, Contiguous claims, Group claims, Posses-
sory rights.

department regulations as to, 158.
discovery does not relate back, 88.
shaft on prior location, 88.

effect and validity, 88.

first discovery gives prior right, 88.

made by intruder, 224.

priority of discovery in, 73.

in shaft, 70.

See also Blanket vein, Coal mined, Intersecting veins, Minerals, Ores, Veins or lodes.
all beneath surface, 114.

within surface boundaries, 114.

at space of intersection of veins, 721.

below point of intersection of veins, 705.

coal lands and coal mined, 746.

PARTITION.

See also Coowners, Mining locations, Tenants in common.

effect on rights of tenants in common, 124.

mining claim, 124.

subject to, 188.

tenants in common, 124.

PATENT.

See also Coal entry, Coal lands, Collateral attack, Conclusiveness, Entry, Equitable title, Land De-
partment, Legal title, Mining locations, Patent proceedings, Placer locations, Possessory rights,
Possessory title, Statute of limitations, Title, Tunnel locations.
absence of conflict necessary, 665.

acceptance of, as waiver of rights, 667.

for part not a waiver as to residue, 406.
not a waiver of extralateral rights, 699.
additional surface ground not included after issuance, 305.
adverse claims not provided for after issuance, 430.
possession entitles locator to, 548.

for a statutory period gives right to, 548.
agricultural, defeated by presence of known mines, 425.
entryman entitled to limited, 823.

must except vested water rights, 722.
amendment to aid in determining subject matters of, 505.
amount of improvements as condition for, 653.

land included under mineral-land laws in Alaska, 1379.
annual labor not a condition for, 236.

required after, 189.

any number of contiguous placers concluded, 522.
applicant's failure to comply with mining law, 386.
application. See Patent proceeding.

of doctrine of relation, 701.
area of placer location in Alaska, 875.
as a conveyance, 666.

abandonment of rights acquired under original act, 667.

evidence of proceedings, 403.