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The Geographical Distribution of Mining Districts in the United States.
By R. W. RAYMOND, Ph.D.,
33
The Relation between the Speed and Effectiveness of Stamps. By R. W.
RAYMOND, Ph.D.,.
Remarks on the Waste in Coal-Mining. By R. P. ROTHWELL, M.E.,
BETHLEHEM MEETING.
Preliminary Report of the Committee upon the Waste of Anthracite Coal.
By ECKLEY B. CoxE, Chairman,.
Abstract of Remarks on the Difficulties in the Identification of Coal-Beds.
By R. P. ROTHWELL, M. E.,
An Eccentric Theodolite. By Prof. FRANCIS L. VINTON,
Abstract of a Paper on the Mines and Works of the Lehigh Zinc Company.
By H. S. DRINKER, C.E.,
Topography, with especial Reference to the Lake Superior Copper District.
By JOHN F. BLANDY, M.E.,
The Use and Advantages of the Prop Screw-Jack. By E. GAUJOT, M.E.,
TROY MEETING.
.
The Attainment of Uniformity in Bessemer Steel. By Dr. THOMAS M.
DROWN,.
The Smelting of Argentiferous Lead Ores in Nevada, Utah, and Montana.
By O. H. HAHN, M.E., ANTON EILERS, M.E., and R. W. RAYMOND,
Ph.D.,
Economy of the Blast Furnace. By Prof. FREDERICK PRIME, JR., .
The Brown Hematite Ore Deposits of South Mountain, between Carlisle,
Waynesborough, and the southeastern edge of Cumberland Valley.
By J. W. HARDEN, M.E.,
Blast-Furnace Slags.
By KENNETH ROBERTSON, M.E.,
PAGE
131
136
144
PHILADELPHIA MEETING.
The Manufacture of Iron and Steel Rails. By JOHN B. PEARSE,
Pillars of Coal. By S. HARRIES DADDOW,
The Importance of Surveying in Geology. By BENJAMIN SMITH LY-
MAN, C.E.,
183
The Method and Cost of Mining the Red Specular and Magnetic Ores of
the Marquette Iron Region of Lake Superior. By Major T. B.
BROOKS, .
Rolling vs. Hammering Ingots. By ALEXANDER L. HOLLEY, C.E.,
Uses of Blast-Furnace Slags. By Prof. T. EGLESTON,
203
206
NEW YORK MEETING.
The Metallurgical Value of the Lignites of the Far West. By A. EILERS,
M.E,
Indiana Block Coal in Competition with Rival Fuels. By JoHN S. ALEX-
ANDER,
225
Malleable Cast-Iron.
By R. H. TERHUNE, M.E.,
233
The Determination of Combined Carbon in Steel by the Colorimetric
Method. By J. BLODGET BRITTON,
240
Economical Results in the Treatment of Gold and Silver Ores by Fusion.
By JOHN A. CHURCH, M.E.,
Remarks on the Hunt and Douglas Copper Process. By T. STerry Hunt,
LL.D., F.R S.,
258
Remarks on the Extraction of Bismuth from Certain Ores. By T. STERRY
HUNT, LL.D., F.R.S.,
A New Method of Sinking Shafts. By ECKLEY B. COXE,.
260
261
PITTSBURGH MEETING.
The Position of the American Pig-Iron Manufacture. By EDMUND C.
PECHIN,.
277
Three-High Rolls. By ALEXANDER L. HOLLEY, C.E.,
287
293
300
The Tertiary Coal-Beds of Canyon City, Colorado. By R. NEILSON CLARK,
Phosphorus in the Ashes of Anthracite Coals. By J. BLODGET BRITTON, 298
The Longwall System of Mining. By J. W. HARDEN, M.E.,
A Comparison between Certain English and Certain American Blast Fur-
naces, as to their Capacity by Measurement and their Capacity by
Weight. By FRANK FIRMSTONE,
A New Occurrence of the Telluride of Gold and Silver. By A. EILERS,
M.E.,
Remarks on the Precipitation of Gold in a Reverberatory Hearth. By R.
W. RAYMOND, Ph.D.,
320
Coking Under Pressure. By JOHN A. CHURCH, M.E.,
322
Remarks on the Wickersham Process of Refining Pig-Iron. By EDMUND
C. PECHIN,
326
BOSTON MEETING.
The Geognostical History of the Metals. By T. STERRY HUNT, LL.D.,
F.R.S.,
The Midlothian Colliery, Virginia. By OSWALD J. HEINRICH, M.E.,
The Midlothian Colliery, Virginia (Supplementary Paper). By OSWALD
J. HEINRICH, M.E.,
346
Remarks on the Magnetites of Clifton, in St. Lawrence County, New York.
By Prof. B. SILLIMAN,
The Probable Existence of Microscopic Diamonds with Zircons and Topaz,
in the Sands of Hydraulic Washings in California. By Prof. B.
SILLIMAN,
Remarks on an Occurrence of Tin Ore at Winslow, Maine. By T. STERRY
Remarks on a Mining Transit and Plummet-Lamp. By R. W. RAYMOND,
Remarks on the Use of the Plummet-Lamp in Underground Surveying.
By ECKLEY B. COXE,
Contributions to the Records of Lead Smelting in Blast Furnaces. By
A. EILERS, M.E., .
Recent Improvements in Diamond Drills and in the Machinery for their
Use. By Prof. WILLIAM P. BLAKE,
The Mining and Metallurgical Laboratories of the Massachusetts Institute
of Technology. By Prof. ROBERT H. RICHARDS,
On the Wasting of Coal at the Mines. By J. W. HARDEN, M.E.,
APPENDIX.
The Origin of Metalliferous Deposits. By T. STERRY HUNT, LL D., F.R.S., 413
Researches on the Consumption of Heat in the Blast-Furnace Process. By
RICHARD AKERMAN. Translated by Prof. FREDERICK PRIME, JR.,
426