XX GEELMUYDEN. ASTRONOMICAL OBSERVATIONS. — [NORW. POL. EXP. 
to determine the Greenwich Time. It was necessary to utilise them all, not 
only for the sake of longitude, but also to get a sufficiently accurate deter- 
mination of the rate of the chronometers which were used for the pendulum 
observations with the Sterneck-apparatus. The ordinary determinations of local 
time are quite useless for this purpose, because the ship was continually drif- 
ting and even a small drift east or west will have a considerable influence 
on the Local Time in these high latitudes. 
The observations for the determination of Greenwich Time were, however, 
very different in point of accuracy. They shall now be considered. 
Solar Eclipses. 
1894 April 5 (April 6 on board). The greatest phase of this eclipse, 
which took place about 2 o’clock in the afternoon, was 0°58. The same 
evening, about 11 o’clock, altitudes of @ Cassiopei# and y Draconis gave the 
latitude 80° 13’ 5” and the error of Hw 8 18™ 95 slow on Local M. T. As 
Mr. Scott-Hansen had made an approximate calculation of the moments of 
contact, 3 observers were ready with the telescope of Negretti and Zambra 
and the altazimuth, viz. Nansen, Scort-Hansen and Jonansen. As they were 
of course on the look-out in good time before the calculated time of 1%* con- 
tact they shifted positions; at the time of observation Nansen happened to be 
at the clock, Scott-Hansen at the telescope and Johansen at the altazimuth. 
At first contact both observers called out at the same moment, which was 
(reduced to Hi) 
April 5, 165 35™ 43s. 
As nothing is to be seen at the moment of geometrical contact, this is 
of course some seconds late. At the second contact the observer at the alta- 
zimuth called out at 
1) P1Sb 31a 95: 
when the little notch was estimated to be of the same size as at 1*%* contact. 
Scott-Hansen noted the time as 
2)) 18 31" 368 
when the last trace vanished in the telescope. He adds the remark that the 
image was very sharp. 
