Survey of Northeast Greenland. 105 
Before the observation. 
57310 (mean time, standard watch) ........ 10h 25m 30s 45s 26m 00s 15s 
57203 (sidereal time, observation watch).... 21 18 55.5 103 _ 25.3 | 40.4 
+10 53 25.3 25.3 25.3 25.4 
296: (Sidereal time) ee EAR Er 29h O1m 15s 30s 45s 02m 00s 
57203 (sidereal time, observation watch).... 21 20 15.2 28.3 43.3 58.3 
+ 41 01.8 01.7 01.7 ORT 
After the observation 
57310 (mean time, standard watch)........ 11h 42m 30s 45s 453m 00$ 15$ 
57203 (sidereal time, observation watch). ... 22 36 07.7 228. 378 | 52.8 
+10 53 37.7 37.8 37.8 37.8 
515902 (sidereal time): а... 23h 18m 30s 45s 19m 00s 15s 
57203 (sidereal time, observation watch).... 22 37 28.3 433 58.3 | 13.2 
+41 017 01.7 01.7 01.8 
It appears that the observation watch kept its rate unchanged 
during the hour and a quarter which elapsed between the two com- 
parisons, and in the course of which a determination of time as well 
as an observation of the occultation of a star has taken place. 
The programme for the evening in question comprised an ob- 
servation for time, an occultation of a fixed star by the moon, an 
observation for time, an azimuth of the moon (determination of longi- 
tude) and finally a finishing observation for time. The last-men- 
tioned observation for time was abandoned on account of clouds. 
The azimuth of the moon followed so closely upon the second 
determination of time that we could not find time to take the obser- 
vation watch down to the “Villa” to make a comparison between the 
two observations. In the case of this group of observations the com- 
parison shows: 
Before the observation. 
57310 (mean time, standard watch) ......... 12h 41m 30s 45s 42m 00$ 15s 
57203 (sidereal time, observation watch)..... ren) НИИ 32.2 47.2 02.2 
+10 53 471 41.2 47.2 47.2 
Dison (sidereall time)). SR ee Ob 17m 30s 45s 18m 00s 15s 
57203 (sidereal time, observation watch)..... 23 36 28.2 43.2 58.2 13 
+41 01.8 01.8 01.8 01.8 
After the observation. 
57310 (mean time, standard watch)......... 14h 46m (005 15$ 30$ 45s 
57203 (sidereal time, observation watch).... 1 40 06.7 21.7 36.8 51.9 
+10 54 06.7 06.7 06.8 06.9 
51390. (sidereal time) 45 a eee а 2h 25m Os 15s 30s 45s 
57203 (sidereal time, observation watch).... 7 43 57.9 12.8 NER: 42.8 
+41 021. 022 023 022 
