CONTENTS 



Introduction 

 Stations 

 Instruments 



Magnetometer Constants 

 Dip Circle Constants 

 Observations at Teplitz Bay 

 Site of Observatory 

 Description of Magnetic Observatory 

 Permanence of Site and Preservation of Piers 

 Declination . . 



Azimuth Marks .... 



Pier M and Its Twist 



Program and Methods of Observing 



Axis Observations .... 



Torsion ...... 



Records ...... 



Tabulations of Records 



Notes Accompanying Declination Records at Teplitz Bay 



Tabulation of Magnetic Declinations Observed at Teplitz Bay 

 Reductions from Declination Observations at Teplitz Bay 



Diurnal Variation 



Formulae Representing Diurnal Variation in Magnetic Declination at Teplitz Bay 



Characteristics of Diurnal Variation in Magnetic Declination at Teplitz Bay 



Magnetic Disturbances 



Secular Change in Magnetic Declination 



Annual Variation in Magnetic Declination 

 Inclination ...... 



Instruments and Methods 



Results 



Secular Change in Magnetic Inclination 

 Horizontal Intensity .... 



Instrument, Methods, and Results 



Secular Change in Magnetic Horizontal Intensity 

 Summary Showing Values of the Magnetic Elements and Their Secular Variations 

 at Teplitz Bay 

 Observations at Alger Island . 

 Site of Observatory . 

 Declination 



Methods 



Records 



Tabulations of Records 



Notes Accompanying Declination Observations at Alger Island 



Tabulation of Magnetic Declinations Observed at Alger Island 

 Reductions from Declination Observations at Alger Island 



Diurnal Variation 

 Inclination 



Instrument, Methods, and Results 

 Horizontal Intensity .... 



Instrument, Methods and Results 

 Summary of Magnetic Elements at Alger Island 

 Miscellaneous Observations 

 A Tromso, Norway 

 B Archangel, Russia 

 C Barents Sea 

 D Determinations on Plane Table Traverse 



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