1898-1902. No. 4.] ASTRON. AND GEODET. OBSERVATIONS. 



II. 



Account of the Surveying. 



Hayes Fjord, Beitstad Fjord and Jokel Fjord were surveyed during 

 the autumn of 1898. A base-line of 1100 metres was measured at the 

 station "Fort Juliane". 



In the spring of 1899, a base-line of 1500 metres was measured at 

 the head of Flagler Fjord; and from this line the work was continued 

 eastwards with points and offsets, thereby establishing a connection with 

 the points laid down the previous autumn. 



Mainly for purposes of verification, further base-lines were measured 

 at the head of Alexandra Fjord and on Cocked Hat Island. 



The azimuth of the network of triangles was determined by azimuth 

 observations (the line from Kjothaugen to Cape Camperdown). 



The initial point of the surveying was the geographical position of 

 the winter haven. Its latitude was determined by several meridian 

 observations of the sun, and its longitude by several series of lunar 

 distances. 



For the mutual verification of instruments and measurements, deter- 

 minations of latitude and longitude were made in several localities by 

 means of solar observations and pocket chronometers. 



For the actual surveying, a plane-table and a kippregel were used; 

 and at the more important points, angles were measured with the 

 theodolite. 



The starting-points for the mapping-operations of the years 1899 to 

 1902 were the positions of the various winter havens. 



The latitude of the winter haven in Havne Fjord, Jones' Sound, 

 and also that of the other two winter havens, is the mean of several 

 meridian observations of the sun. 



The longitude of the winter haven in Havne Fjord was determined 

 by observation of the solar eclipse in May, 1900; that of the winter 

 haven in Gaase Fjord, 1900—01, was found by observations there in 

 June, 1900, in relation to that of Havne Fjord, with the aid of one of 



