TABLE OF CONTENTS. 



Introduction : Page 



Astronomical and Nautical Instruments VII 



Determination of Latitude and Local Time XI 



Determination of Azimuth XVII 



Longitude, and Rate of Chronometers XIX 



Voyage along the Coast of Siberia L1V 



The Sledge-Expedition LVII 



The two Charts LX 



Observations: 



A. Altitudes measured with the Altazimuths 3 



B. Observations with the Sextant 26 



Observations and Results: 



C. Determination of Azimuth 61 



D. Determination of Magnetic Declination by Compass 70 



E. Determination of Declination and Deviation by Compass on Board 77 



F. Direct Determination of Deviation 82 



Results: 



G. Greenwich Time 85 



H. Latitude, Local Time, and Longitude 86 



I. Refraction 108 



The Sledge-Expedition: 



Observations 1895 Ill 



Observations taken at the Winter Hut 125 



On the way southwards from the Winter Hut 130 



