Volume 81
Papers and Discussion Presented at Meetings Held at New York, February, 1928 and at Boston, August, 1928
Title Page
Preface
Contents
Institute Officers
Committee on Geophysical Methods of Prospecting

PAPERS:

GENERAL

TITLE AUTHOR
Geophysical Exploration for Ores (With Discussion) Max Mason
Geophysics and the Mining Engineer Allen H. Rogers

ELECTRICAL METHODS

TITLE AUTHOR
Earth – resistivity Measurements in the Lake Superior Copper Country (With Discussion) W. O. Hotchkiss, W. J.Rooney and James Fisher
Certain Applications of the surface Potential Method (With Discussion) Warren Weaver
Recent Results in Electrical Prospecting for Ore (With Discussion) Hans Lundberg
Electrical Prospecting for Molybdenite at Questa, N,M. Karl Sundberg and Allen Nordstrom
Operating Principles of Inductive Geophysical Processes (With Discussion) J. J. Jakosky
Some Applications of Potential Methods to Structural Studies (With Discussion) E. G. Leonardon and Sherwin F. Kelly
Electrical Prospecting Applied to Foundation Problems (With Discussion) Irving B. Crosby and E. G. Leonardon
Discovery of Salt Domes in Alsace by Electrical Exploration (With Discussion) Sherwin F. Kelly
Field Observations of Electrical Resistivity and Their Practical Application J. G. Koenigsberger

MAGNETIC METHODS

TITLE AUTHOR
Certain Aspects of Magnetic Surveying (With Discussion) L. B. Slichter
Theory of A. Schmidt’s Horizontal Field Balance (With Discussion) C.A. Heiland
A Background for the Application of Geomagnetics to Exploration (With Discussion) Noel H. Stearn
The Dip’ Needle as a Geological Instrument (With Discussion) Noel H. Stearn
Magnetometric Investigation of Gold Placer Deposits near Golden, Colorado C. A. Heiland and W. H. Courtier
A Demonstration of the Reflection of Geologic Conditions in Observed Magnetic Intensity (With Discussion) H. R. Aldrich
A New Micromagnetometer Frank Rieber

GRAVITY METHODS

TITLE AUTHOR
The Eötvös Torsion Balance Method of Mapping Geologic Structure (With Discussion) Donald C. Barton
Calculation in the Interpretation of Observations with the Eötvös Torsion Balance Donald C. Barton
Computation of Eötvös Gravity Effects (With Discussion) Lancaster-Jones
Gravity Surveying in Great Britain H. Shaw
Cartographic Correction for the Eötvös Torsion Balance (With Discussion) C. A. Heiland
Experiments with Eötvös Torsion Balance in the Tri-State Zinc and Lead District (With Discussion) P. W. George

SEISMIC METHODS

TITLE AUTHOR
Seismic Method of Mapping Geologic Structure Donald C. Barton
Modern Instruments and Methods of Seismic Prospecting (With Discussion) C. A. Heiland
Adaptation of Elastic-wave Exploration to Unconsolidated Structures Frank Reiber

INDEX

TITLE AUTHOR
Index  
Research narratives