Volume 54
Containing the Papers and Discussions of the New York Meeting, February, 1916

Title Page

Preface

Contents

Officers

Honorary Members

Committees

PROCEEDINGS OF MEETINGS

MEETING	DATE
New York Meeting	February, 1916
Reports for the Year	February, 1916
Address of President W.L. Saunders	February, 1916
Report of the Secretary	February, 1916
Report of the Committee on Membership	February, 1916
Report of the Treasurer	February, 1916
Report of the Library Committee	February, 1916
Report of the Committee on Papers and Publications	February, 1916

PAPERS:

NEW YORK MEETING February, 1916

TITLE	AUTHOR
Notes on Flotation (with Discussion)	J. M. Callow
Grinding Brass Ashes in the Conical Ball Mill	Arthur F. Taggart and R. W. Young
Illumination of Mines (with Discussion)	Robert P. Burrows
Broken Hill Underground Mining Methods (with Discussion)	E. J. Horwood
Underground Mining Methods of Utah Copper Co.	Thomas S. Carnahan
Interpretation of Assay Curves for Drill Holes	Edward H. Perry and Augustus Locke
An Electro-Hydraulic Shovel	Frank H. Armstrong
Tests on Various Electric Motor-Driven Equipment Used in the Preparation of Anthracite Coal (with Discussion)	H. M. Warren, A. S. Biesecker and E. J. Powell
The New Electric Hoist of the North Butte Mining Co. (with Discussion)	Franklin Moeller, with a note by C. D. Gilpin
Application of Electric Power to Mining Work in the Witwatersrand Area, South Africa (with Discussion)	J. Norman Bulkley
Researches on Fire Damp (with Discussion)	Enrique Hauser
The Effect of Aeration and “Watering Out” on the Sulphur Content of Coke	J. R. Campbell
Economies in a Small Coal Mine (with Discussion)	Herbert A. Everest
Brown-Coal Mining in Germany	George J. Young
The Stresses in the Mine Roof (with Discussion)	R. Dawson Hall
The Evolution of Drilling Rigs (with Discussion)	R. B. Woodworth
The Control of Petroleum and Natural Gas Wells	Alfred G. Heggem
Development of the Law Relating to the Use of Gas Compressors in Natural Gas Production (with Discussion)	Samuel S. Wyer
Necessary Use and Effect of Gas Compressors on Natural Gas Field Operating Conditions	Samuel S. Wyer
Geology of the Ore Deposits of the Tintic Mining District	Guy W. Crane
The Disseminated Copper Ores of Bingham Canyon, Utah	J. J. Beeson
Observations on Certain Types of Chalcocite and Their Characteristic Etch Patterns (with Discussion)	C. F. Tolman, Jr.
Magmatic Differentiation in Effusive Rocks (with Discussion)	Sidney Powers and Alfred C. Lane
Conservation and Economic Theory	Richard T. Ely
The Use of Low-Grade Phosphates	James A. Barr
Pennsylvania Fire Clay (with Discussion)	L. C. Morganroth
The Newman Hearth	William E. Newman
Recent Advances in the Chemistry of the Cyanogen Compounds	J. E. Clennell
Segregation in Gold Bullion (with Discussion)	James H. Hance
A Development of Practical Substitutes for Platinum and Its Alloys, with Special Reference to Alloys of Tungsten and Molybdenum (with Discussion)	Frank Alfred Fahrenwald
The Determination of Grain Size in Metals (with Discussion)	Zay Jeffries, A. H. Kline and E. B. Zimmer
Recrystallization of Cold-Worked Alpha Brass on Annealing (with Discussion)	C. H. Mathewson and Arthur Phillips
The Behavior of Stibnite in an Oxidizing Roast (with Discussion)	H. O. Hofman and John Blatchford
The Determination of Antimony in the Products Obtained by Roasting Stibnite	William T. Hall and John Blatchford

INDEX

TITLE	AUTHOR
Index