Sinkings, Rhein-preussen colliery, Ger-
many, through water-bearing strata,
628, 629, 630.

Sir John's vein, Tynehead, copper-ore,
403.

Sirena, Mexico, Guanajuato, 51, 52, 56.
SISSONS, -, quoted, 509.

Skelton, South, mines, Gray - Tarbit
drilling-machine, 532.

- mine, Martin drilling-machine, 532.
Skinningrove mines, Hall drilling.

machine, 532.
Sky-stone, Crumlin meteorite, 274.
Slag-ladles, Consett iron-works, 593.
Slapewath mines, hand machine-drills,

SMEATON, THOMAS, quoted, 400.

Smeaton, Olive-bank seams, 126.

Smelt-mills, Alston moor, names, etc.,
398.

Smelting, direct, copper-ores, 316.

iron with coal, 219.

SMITH, ADAM, quoted, 225.

SMITH, ALEXANDER, legislation and the
ownership of properties containing coal,
240.

SMITH, C. SEBASTIAN, member of council,
election, M.C., 87.

SMITH, FRANK B., election, S., 114.
SMITH, H. DUNFORD, analytical valuation
of gas-coals, 166.

SMITH, WILLIAM, election, N.E., 157.
SMITH, WILLIAM, law of succession of
layers of rock, 401.

Smittergill burn, Alston moor, sulphur
vein, 402.

Smudge, coking, 195, 197.

SNOW, CHARLES, application of coal-
cutting machines to deep mining, 202.

member of council, election, M., 93.
Soda, caustic, added to boiler water,
Seghill colliery, 546.

Sodium compounds in water from borings
in north of France, 644.
Sohland, Saxony, nickel-ores, 708.
Soil, diurnal oscillations, 659.

mesozoic rocks, rock-salt and other
useful minerals, 737.

Minorca, triassic copper-ores, 735.
Roman mining implements in old
workings, 406.

-, southern. pyrites-deposits, origin, 734.
Spark-gaps. Neptune-bank works, 610.
Sparking, cause of explosions, 288, 289,
292.

Sparkless electric plant for use in mines
and ironworks.-Discussion, 233.
Spathose iron-ore, Austria, Carinthia,
676.

699.

Germany, Bavaria, Amberg,

--, Mexico, Guanajuato, 56.
Spawood mines, hand machine-drills,
527.

Special rules, timbering in mines, 97.
Speed of sets, Garesfield incline, 578.
SPENCER, E. D., member of council,
election, M.C., 87.

SPENCER. G., changing headgears at Pleas
ley colliery, 256.

vice-president, election, M.C., 87.
Sperm value of coals, 312.

Spider lines, introduction of use as cross-
hairs, 511.

Spinel, diabase, Saxony, 674.

SPIREK, VINCENZO, cinnabar-deposits,

Monte Amiata, Tuscany, 719.
SPRING, W., experiments on the permea-
bility of clay, 643.

Squibs, use in Cleveland mines, 536.
Stables, underground, 482.-Discussion,
486.

STEAVENSON, A. L., use of ratchet and
other hand machine-drills in the Clere.
land mines, 535.

Steel and iron industries, etc., Germany,
140.

Steel-plate manufacture, Consett iron-
works, 593.

Steel-works, Sir W. G. Armstrong,
Whitworth & Company, 605.

Stein colliery, village, Düsseldorf ex-
hibition, 618.

STELLA, A., AND L. BALDACCI, earth-
quake at Saló, Italy, 649.

Stella village, Blaydon, coal-seams be
neath brockwell seam, 552.
Stephanite, Mexico, Guanajuato, 54, 59.
STEWART, JAMES, analytical valuation of
gas-coals, 167.

-

quoted, 312, 313.

valuation of gas-coals, 307.-Discus-
sion, 310.

STOBART, THOMAS CARLTON, election,
N.E., 17.

STOBBS, J. T., election, NS., 139.

marl-slate and yellow sunds of North-
umberland and Durham, 389.
Stocks, ore-deposits, 642.

Stockton, coal in carboniferous lime-
stone, 461.

Stockwork, quartz, antimonite, Montig.
nat, France, 692.

Stoke, Staffordshire, Keele boring, 133.
Stokers, automatic, Manors power.
house, 604.

mechanical, Seghill colliery, 539.
Stoneyhill, Olive-bank seams, 126.
Stoping, overhand, Shamrock colliery,
Germany, 625.

STOREY, T. E., election, N.S., 139.
Stoves, Cowper, Consett iron-works, 592.
Stowcrag vein, Tynehead, copper-ore, 403.
Strata, newer, overlying Ruhr coal-field,
Germany, and the waters which they
contain, 697.

Northumberland coal-field, 424.
Stratigraphy of central Bohemian coal-
basins, 671.

Stromberg, Germany, manganese-ore,
701.

STRONG, GEORGE ADAMSON, election,
N. E., 17.

STROUD, PROF. HENRY, Grubb sight for
surveying instruments, 180.

STUART, D. M. D., Fernie explosion, 463.
Students, Bochum mining school, number.
634.

STUMPF fly-wheel type governors, Nep-
tune-bank works, 609.

Styria, upper, graphite-beds, metamor-
phism, 681.

Submarine areas, Nova Scotia, regula
tions as to working coal, 438.
SUESS, PROF. E., quoted, 684.
Sulphates in boiler water, Seghill
colliery, 546,

Udston colliery, explosion, effect of
percussion of air, 472.
Ulexite, Argentina, 749.

Under-clay, made into bricks, Cambois
colliery, 587.

Underground and surface surveys, con-
nection of.-Discussion, 493.
costs, county of Durham, 254.

- haulage at Mossblown colliery, Ayr-
shire, description of. - Discussion, 115,
203.

seismological observatory at Przibram.
Bohemia, 660.

stables, 482.--Discussion, 486.
Underlay shafts, use of theodolite, 502.
Undersea coal of Northumberland coast,
421. Discussion, 4.9.

workings, dangers, 431.
Nova Scotia, 435.
United Kingdom, accidents from falls,

248.

coal-output, 140, 222, 247.
depths of winding, 564.
graphite, output, 668:

Great Dismal swamp, 687.

institutions where mining is taught,

Universal colliery, explosion, effect of
percussion of air, 472.

failure of bonnetted Clanny lamp,

471.
UNIVERSITY OF CALIFORNIA, COLLEGE OF
MINING, U.S. A., 249.

UNIVERSITY OF MINNESOTA, Minneapolis,
U.S.A., 249.

UNIVERSITY OF MISSOURI, U.S.A., 249.
Upeast winding-shaft, Neumühl colliery,
model, Düsseldorf exhibition, 616.
Upleatham mines, Hall drilling-machine,

532.

Urals, Russia, diamonds, 726.
Troitsk, iron-ores, 729.

Utah, U.S.A., copper-ores, 315.
Utilization of exhaust-steam by combined
application of steam-accumulators and
1. Introduc-
condensing turbines, 322.-

tion, 322.-2. Principle and general ar-
rangement, 323.-3. Use of the turbine
for utilizing waste-steam, 324.-4.
Description of apparatus which serves
to regulate the flow of exhaust-steam,
326.-5. Installation of the apparatus,
328. 6. Working of the apparatus,
330.-7. Expansion-turbine, 332.-8.
Raising of exhaust-pressure of primary
motor, 333. 9. Condenser, 334.-10.
Results which it is possible to obtain
by means of the Rateau system: (a)
mines, 335; (b) steelworks, 336.-11.
Adaptation of Rateau system to inter-
mittently running engines already
provided with condensing apparatus,
337.-12. Saving to be effected by the
proposed system: (a) economy on the
cost of installation, 338; (b) economy
in the current-cost of production of
the additional power recovered, 339. -