Volume 40
Containing the Papers and Discussions of 1909

Title Page

Preface

Contents

Officers

Past Officers

Honorary Members

List of the Meetings

Publications

Constitution and By-laws

Annual Meeting

Proceedings of the Board of Directors for the Year 1908

Report of the Council for the year 1908

Memberships

PROCEEDINGS OF MEETINGS

MEETING	DATE
New Haven Meeting	February, 1909
Spokane Meeting	September, 1909

PAPERS:

CHATTANOOGA MEETING October, 1908

TITLE	AUTHOR
Studies of Illinois Coals	H. Foster Bain, Frank W. DeWolf, J.M. Lindgren, Perry Barker, George S. Rice, J.M. Snodgrass, A. Bement, W.F. Wheeler and C.K. Francis
The Clinton Iron-Ore Deposits in Alabama	Ernest F. Burchard
The Clinton Iron-Ore Deposits in Stone Valley, Huntingdon County, Pa	J.J. Rutledge
The Clinton Iron-Ore Deposits in New York State	D.H. Newland
Ozark Lead- and Zinc-Deposits : Their Genesis, Localization, and Migration	Charles R. Keyes
Monazite and Monazite-Mining in the Carolinas	Joseph Hyde Pratt and Douglas B. Sterrett

NEW HAVEN MEETING February, 1909

TITLE	AUTHOR
A Graphic Solution of Kutter's Formula	L.I. Hewes and Joseph W. Roe
The Hammond Mining and Metallurgical Laboratory of the Sheffield Scientific School, Yale University	Louis D. Huntoon
Blast-Pressure at the Tuyeres and Inside the Furnace	R.H. Sweetser
The Coal-Fields of the United States	Marius R. Campbell and Edward W. Parker
Kentucky Fluorspar and Its Value to the Iron and Steel Industries	F. Julius Fohs
Vanadium-Deposits in Peru	D. Foster Hewett
The Residual Brown Iron-Ores of Cuba	C.M. Weld
A Reliable Steel Rail and How to Make It	James E. York
The Coal-Mines and Plant of the Stag Cañon Fuel Co., Dawson, N. M.	Jo. E. Sheridan
Pan-Amalgamation : an Instructive Laboratory-Experiment	H.O. Hofman and C.R. Hayward
Pressure-Fans as. Exhaust-Fans	Audley H. Snow
The American Institute of Mining Engineers and the Conservation of Natural Resources	John Birkinbine
Conservation of Natural Resources	James Douglas
Driving Headings in Rock Tunnels	W.L. Saunders
Development in the Size and Shape of Blast-Furnaces in the Lehigh Valley, as Shown by the Furnaces at the Glendon Iron Works	Frank Firmstone
The Laws of Fissures	Blamey Stevens
Metal-Losses in Copper-Slags	Lewis T. Wright
Hydraulic Dredging for Gold-Bearing Gravels	Henry G. Granger
The Treatment of Slime on Vanners	Rudolf Gahl
Biographical Notice of Hermann Wedding	Emil Schroedter

SPOKANE MEETING September, 19097

TITLE	AUTHOR
Modern Progress in Mining and Metallurgy in the Western United States	David W. Brunton
The Ruble Hydraulic Elevator	J. McD. Porter
Modern Practice of Ore-Sampling	David W. Brunton
The Conservation of Coal in the United States	Edward W. Parker
The Influence of Bismuth on Wire-Bar Copper	H.N. Lawrie
The Limit of Fuel-Economy in the Iron Blast-Furnace	N.M. Langdon
Need of Instrumental Surveying in Practical Geology	Benjamin Smith Lyman
The Influence of Ingot-Size on the Degree of Segregation in Steel Ingots	Henry M. Howe
A New Separator for the Removal of Slate from Coal	W.S. Ayres
The Barometric and Temperature Conditions at the Time of Dust-Explosions in the Appalachian Coal-Mine	N.H. Mannakee
Dust-Explosions in Coal-Mines	Franklin Bache
Borax-Deposits of the United States	Charles R. Keyes
The Geology, Mining, and Preparation of Barite in Washington County, Missouri	A.A. Steel
Conditions and Costs of Mining at the Braden Copper-Mines, Chile	William Braden
Preparing and Recording Samples for Use in Technical Assay-Laboratories	Louis D. Huntoon
Glass Mine-Models	Edmund D. North
An Adjustable Pyrometer-Stand	L.W. Bahney
The Cyaniding of Silver-Ores in Mexico	Albert F.J. Bordeaux
Cyaniding Slime	Mark R. Lamb
The Assay and Valuation of Gold-Bullion	Frederic P. Dewey
The Nicola Valley Coal-Field, British Columbia	Milnor Roberts
Influence of Top-Lag on the Depth of the Pipe in Steel Ingots	Henry M. Howe
The Behavior of Calcium Sulphate at Elevated Temperatures with Some Fluxes. Postscript	H.O. Hofman and W. Mostowitsch
The Formation and Enrichment of Ore-Bearing Veins. Supplementary Paper	George J. Bancroft

DISCUSSIONS

TITLE	AUTHOR
Of Mr. Howe's Paper on Piping and Segregation in Steel Ingots (see Trans., xxxviii., 3)
Of Mr. Keyes's Paper on Genesis of the Lake Valley, New Mexico, Silver-Dc- posits (see Trans., xxxix., 139)
Of Mr. Scholz's Paper on Effect of Humidity in Mine-Explosions (see Trans., xxxix., 328)
Of Mr. Bordeaux's Paper on The Silver-Mines of Mexico (see Trans., xxxix., 357)
Of Mr. Hammond’s Paper on Professional Ethics (see Trans., xxxix., 620)
Of Mr. Rutledge's Paper on The Clinton Iron-Ore Deposits in Stone Valley, Huntingdon County, Pa. (see p. 134)
Of Mr. Keyes's Paper on Ozark Lead- and Zinc-Deposits: Their Genesis, Localization, and Migration (see p. 184)
Of Mr. Hewett's Paper on Vanadium-Deposits in Peru (see p. 274)
Of the Paper by Messers. Hofman, and Hayward on Pan-Amalgamation : an instructive Laboratory-Experiment (see p.382)
Of Mr. Stow's paper on Pressure-Fans vs. Exhaust-Fans (see p. 398)
Of Mr. Douglas's Paper on Conservation of Natural Resources (see p. 419)
Of Mr. Bruuton's Paper on Modern Progress in Mining and Metallurgy in the Western United States (see p. 543)
Of Mr. Parker's Paper on The Conservation of Coal in the United States (see p. 596)
Of Mr. Bache's Paper on Dust-Explosions in Coal-Mines (see p. 667)
Of Mr. Keyes's Paper on Borax-Deposits of the United States (see p. 674)
Of Mr. North's Paper on Glass Mine-Models (see p. 755)
Of Mr. Bordeaux's Paper on The Cyaniding of Silver-Ores in Mexico (see p. 764)

INDEX

TITLE	AUTHOR
Index
Errata