130 GEELMUYDEN. ASTRONOMICAL OBSERVATIONS. [NORW. POL, EXP. 
On the way southwards from the Winter Hut. 
Comparisons between the watches I and II. 
Rel. | Rel. 
1896 I I—II rate 1 1896 | I | I—-Il | cate 
h m hemes s h m h am’ §s s 
May 19 3.17 am il tay all June 1 8 50 pm 2 0 16 
gO] Cap | a py as Mt te Biiadcso 1 ero a8 ee 
91 ih Bpy Es 1 57 38 16 4 5 25 am OY (0) yi 1h 
22 Soe il) Gy) ss 14 5 | 10 43 i Telenio 15 
| 5a7 "| iss a3 | s/o” | aa 0| 2% 
26 | 5 19 pm 1 58 57 15 9/11 4pm 2 2 20 19 
98 0 16 am 159° 16 18 Gly atl 48) am 2 2 49 16 
June 1 1 29 am Ola 12 | SY) oa ca ‘ 
June 17 0 31 am | —2 19 50 
The running down of I took place the day after a struggle with a walrus which had 
attacked and damaged one of the kayaks. On applying the mean relative acceleration of 145.6, 
the reduction to the former state will be: 
June 13, 2b 40m am I—II = + 2b 3m 16s 
Rel. Ace. in 4.1 days =) eid} iO) 
June 17, I—II should have been +2 4 16 
2 was —219 50 
I lost through stopping 40 6 
It will be seen that the relative acceleration during the travelling was in the mean 
7 seconds less than during the last month at the Winter Hut. As to the acceleration of I, which 
was found to be + 9s.2 during the same month, it may be mentioned that a series of comparisons 
with Mr. Jackson’s chronometer in June and July gave an acceleration of 108 relative to this 
chronometer, which was said to lose 08.5 daily, consequently I accelerating 98.5 daily. Some 
observations on the way southwards which will be found below seem, however, to indicate that 
the acceleration during the travelling was in the mean somewhat greater, about 128.5. This 
value has been used for computing the longitude West of the meridian of the Winter Hut, 
designated below by 4. 
In order to utilise the bearings by compass it was necessary to know the magnetic 
declination. For the Winter Hut the value 18°.2 E, found on May 16, was adopted. In Jackson’s 
A Thousand Days in the Arctic is given a table of magnetic declinations at Cape Flora as 
determined by Mr. Armitage. The mean value for the summer 1896 was 15°.1 E. The isogones 
in this regions running nearly north and south, this would correspond nearly to 0°.6 decreasing 
of magnetie declination per degree of west longitude. 
In some cases the position at the time of observation has been determined by the crossing 
of such a line of bearing with the line of equal altitudes. 
