Volume 21

Title Page

Preface

Contents

Officers

List of the Meetings

Publications

Rules

PROCEEDINGS OF MEETINGS

MEETING	DATE
Baltimore (Annual) Meeting	February, 1892
Lake Champlain (Plattsburgh) Meeting	June, 1892
Schuylkill Valley (Reading) Meeting	October, 1892
Montreal (Annual) Meeting	February , 1893

PAPERS:

BALTIMORE MEETING February, 1892

TITLE	AUTHOR
Zinc-Blende Mines and Mining near Webb City, Mo	Carl Henrich
Ancient Method of Silver-Lead Smelting in Peru	Otto F. Pfordte
Fluorspar-Deposits of Southern Illinois	S.F. Emmons
Coals and Cokes of Eastern Kentucky	Joseph H. Allen
Notes on the Selection of Iron-Ores, Limestones, and Fuels for the Blast-Furnace	Fred W. Gordon
The Desilverization of Lead-Slags	H.A. Keller
Experiments with the Roessler Converter at the Marsac Refinery, Park City, Utah	C.A. Stetefeldt
Biographical Notice of Edward Nichols	William G. Neilson
La Gardette: The History of a French Gold-Mine	T.A. Rickard
Extraction of Ore from Wide Veins or Masses	G.D. Delprat
The Preservation of the Hearth and Bosh-Walls of the Blast-Furnace	James Gayley
A New Method of Removing Skulls from Direct-Metal Ladles	Davis Baker
Granulating Magnetic Iron-Ores with the Sturtevant Mill at Croton Magnetic Iron-Mines, N. Y.	W.H. Hoffman
The "Great Gossan Lead " of Virginia	Edgar C. Moxham
Notes on the Geological Origin of Phosphate of Lime in the United States and Canada	Walter B.M. Davidson
Contribution to the Early History of the Industry of Phosphate of Lime in the United States	William P. Blake
Association of Apatite with Beds of Magnetite	William P. Blake
Phosphate Chemistry as it Concerns the Miner	Thomas M. Chatard
Laurentian Low-Grade Phosphate-Ores	John Stewart
A List of Minerals Containing at Least One Per Cent. of Phosphoric Acid	William P. Blake
A Preliminary Sketch of the Phosphates of Florida	George H. Eldridge
Basic Slags as Fertilizers	W.H. Morris
The Simultaneous Production of Ammonia, Tar, and Heating-Gas	Alphonse Hennin
A New Tin Mineral in the Black Hills	Titus Ulke
Bohemian Garnets	George Frederick Kunz
The Magnetic Iron-Ores of Ashe County. N.C.	H.B.C. Nitze
High-pressure Hydraulic Presses in Iron Works	R.M. Daelen
The Control of Silicon in Pig-Iron	William H. Morris

PLATTSBURGH MEETING June, 1892

TITLE	AUTHOR
Note on a Collection of Tertiary Fossil Plants from Potosí Bolivia	Prof. N.L. Britton
Plain vs. Corrugated Belts for Vanners	Otto F. Pfordte
The Marsac Refinery, Park City, Utah	C.A. Stetefeldt
The System of Filling at the Mines of the Minnesota Iron Company, Soudan. Minn.	D.H. Bacon
Note on the Use of a Mechanical Stirrer for Promoting Chemical Action	Edward K. Landis
Copper Crystallization at the Copper Glarice and Potosi Mine, Grant County, New Mexico	Charles H. Snow
A Modern Plant for the Precipitation of Gold from Chlorine Solution by Sulphurous Acid and Hydrogen Sulphide	Werner Langguth
The Calculation of Slags	N.M. Langdon
Note on Boiler-Explosions	Prof. William P. Mason
Note on the Magnetic Separation of Iron-Ore at the Sanford 0re-Bed. Moriah, Essex County. N. Y., in 1852	William P. Blake
The Making of Specifications for Structural Materials	Charles B. Dudley
Biographical Notice of William Powell Shinn	Joseph D. Weeks
Biographical Notice of Thomas Sterry Hunt	James Douglas
The Gold-Fields of Otago	T.A. Rickard
Alluvial Mining in Otago	T.A. Rickard
The Influence of Location upon the Pig-Iron Industry (Presidential Address at Plattsburgh)	John Birkinbine
Fault-Rules	Francis Freeland
The Chase Magnetic 0re-Separator	Harvey S. Chase
The Late Discovery of Large Quantities of Magnetic and Non-Magnetic Pyrites in the Croton Magnetic Iron Mines	W.H. Hoffman
The Cummings Ore-Granulating Mill	C.M. Ball
Magnetic Concentration at Tilly Foster	F.H. McDowell
The Granulation of Iron-Ore by Means of Crushers and Rolls	Axel Sahlin
Crushing Iron-Ores with the Sturtevant Mill for Concentration	S.R. Krom
Discussion on the Crushing of Iron-Ore for Magnetic Separation
Studies in Structural Geology	Bailey Willis
A Geological Map of the State of New York	James Hall

SCHUYKILL VALLEY MEETING October, 1892

TITLE	AUTHOR
The Zeehan and Dundas Smelting-Works, Tasmania	George F. Beardsley
The Tale Industry of the Governeur District. St. Lawrence County, New York	Axel Sahlin
The Rock-Drill Applied to Opening the Tapping-Hole of a Blast-Furnace	David Baker
The Wiborgh Luft (Air)-Pyrometer	Emanuel Trotz
The Brown Segmental Wire Gun	N.B. Wittman
Note on the Occurrence of Grahamite in Texas	E.T. Dumble
The Grading of Pig-Iron	E.T. Clymer
Areal Work of the United States Geological Survey	W.J. McGee
Industries of the Schuylkill Valley (Presidential Address at Reading)	John Birkinbine
Note on Manganese-Steel	Henry M. Howe
The Hill-Farm-Parrish Mine-Fire	Frank A. Hill
The Mesabi Iron-Range	Horace V. Winchell
The Bendigo Gold-Field (Second Paper) : Ore-Deposits Other than Saddles	T.A. Rickard
An Occurrence of Coarse Conglomerate above the Mammoth Anthracite Bed	Benjamin Smith Lyman
The Hugh Kennedy Hot-Blast Stove	W.C. Coffin
The Basic Bessemer Steel Plant of the Pottstown Iron Company	Joseph Hartshorne
Observations on the Relations Between the Chemical Constitution and Physical Character of Steel (See Discussion p. 999)	William R. Webster

MONTREAL ANNUAL MEETING October, 1892

TITLE	AUTHOR
The Phosphate Mines of Canada (See Discussion p. 1000)	H.B. Small
The Cause of Faulting	John A. Church
Method of Plumbing Shafts	A. Neustaedter
Notes on Emmerton's Method for the Determination of Phosphorus	H.C. Babbitt
An Investigation of Coals for Making Coke in the Semet-Solvay Ovens, with the Recovery of Ammonia and Tar; and Remarks on the Sources of Ammonia	J.D. Pennock
The Mineral Resources of Southeast Alaska	G.W. Garside
Note on Anthracite " Coal-Apples" from Pennsylvania	W.S. Gresley
Titaniferous Ores in the Blast-Furnace	Auguste J. Rosh
Notes on the Geology of the Half-Moon Mine, Pioche, Nevada	Ernest Wiltsee
The Reduction-Works of the Mount Stewart Lead and Silver Mining Company, Leadville, New South Wales	F.M. Drake
The Geological Map of the United States	J.W. Powell
The Greene-Wahl Process for Manufacturing Manganese and Alloys of Manganese Free from Carbon	F. Lynwood Garrison
A Variable-Speed Pulley	H.C. Spaulding
Notes on the Lease- or Tribute-System of Mining, as Practiced in Colorado	Benjamin B. Lawrence
The Use of Producer-Gas for Drying and Roasting Ore at the Lixiviation-Mill of the Holden Smelting and Milling Co., Aspen, Colorado	Willard S. Morse
The Big Stone Gap Coal-Field (See Discussion p. 1004)	James M. Hodge
Note on Unfreezable Dynamite	E.E. Russell Tratman
A New Form of Furnace for Roasting and Oxidizing Ores	W.P. Blake
The Biwabik Mine	H.V. Winchell and J.T. Jones
The Development of Technical Societies (Presidential Address at Montreal)	John Birkinbine
The Manufacture of Charcoal-Iron from the Bog- and Lake-Ores of Three Rivers District, Province of Quebec, Canada	P. H. Griffin
Additional Notes on the Prismatic Stadia-Telescope	R.H. Richards

DISCUSSIONS

TITLE	AUTHOR
Discussion of Mr. Webster's paper (p. 766)
Discussion of Mr. Small's paper (p. 771)
Discussion of Mr. Hodge's paper (p. 922)
Errata

INDEX

TITLE	AUTHOR
Index