3 8 SCIENTIFIC RESULTS OF ZIEGLER POLAR EXPEDITION 



in south and zenith; 2:20:42, very light wind, faint aurora in .south, cross still in moon ; 

 2: 20: 52, aurora from zenith to east and west ; 2:21: 12, faint aurora in west, dark clouds in 

 east and west ; 2:21: 38, aurora has disappeared, partly cloudy in east, wind light. 3: 16: oo, 

 revolver not taken to hut ; high wind. 4: 20: oo, revolver not taken to hut, aurora in north ; 

 4: 20: 46, passage to vestibule drifted in so much that observer cannot very well observe weather 

 conditions or aurora. 6, preparations for sledge journey being completed, no time to carry 

 out observations this day. 7, sledge party left this A. M. 9:06: 26, observations interrupted 

 by failure of light. 13:02:46, magnet vibrating up aud down; 13:04:02, daylight begins; 

 13:06:36, increasing but stopped a moment at this reading. 16:03:42, daylight begins; 

 16:08: 18, magnet taken out and replaced (not being level in stirrup either way); 16: 12: oo, 

 clear overhead , light fog on ice field ; 16:12:32, scale increasing almost imperceptibly ; 1 6 : 1 6 : 32 , 

 observer can see no cause for this jump of needle; 16:21: 18, daylight ends; 16:22:22, sky 

 clear; 16:22:54, aurora from northeast to zenith increasing in intensity; 16:23:10, very 

 faint aurora in zenith and southwest. 17; 16:00, instrument removed from pier in morning to 

 clean grooves in which foot-screws set. 18: 22:00, wind velocity about 20 miles an hour, sky 

 hazy. 20:00:00, instrument cleaned in morning, revolver not taken to hut; 20:03:28, day- 

 light begins. 21:11:36, revolver not taken to hut; owing to 60 to 70 mile wind hut could 

 not be reached before 11:30. 22: 12:00, revolver not taken to hut; 22: 14: 21, checked mag- 

 net with adjusting pin. 23:00:00, revolver not taken to hut; 23:00:06, magnet checked 

 with adjusting pin; 23:03:18, daylight begins; 23:05:30, wind ceases; 23:06:46, wind in 

 gusts; 23:08: 58, light northerly wind, sky cloudy; 23: 15: 54, wind from northwest; 23:16:04, 

 trouble with light cause of delay in observations; 23: 22: 06, sufficient light to see dwelling 

 distinctly through flying snow; 23: 23: i8 > daylight ends. 24:16:00, revolver not taken to 

 hut. 25:24: 10, fiber broke. 26: 11:30, put in four new fibers. 27:02:46, daylight 

 begins; 27:05:22, decreased to this, stopped, and then increased. 28:08:00, fibers found 

 broken; three new fibers put in and observations started as soon as torsion taken out; fibers 

 again broken during intensity observations and replaced by four new fibers at 23 : oo. 

 29:13:54, scale increased to 57 d -4 at 13:55.2. 30: oo: oo, sky partly cloudy, north-north- 

 east wind of velocity 48 miles per hour; 30:00: 12, observer found tin box in pocket and put 

 same away where would not affect instruments; 30:06:00, wind decreasing; 30: 12:41.7, scale 

 reached 28 d .7, decreased steadily, stationary for a moment at i6 d .8, decreased to io d .o after 

 reading at 12:46, then increased to i8 d .7, and then oscillated as shown at 12:50; 30: 15: 04, 

 scale decreased to n d .6; 30: 15: 54, magnet vibrating up and down; 30: 20: 02, scale increased 

 to 22 d .9, stopped, decreased to 22*. i; 30: 20: 10.6, scale increased to 5i d .7; 30: 20: 38, increased 

 to 49*. i, stopped, then increased to 5i".9 at 20: 38.9; 30: 20: 44, scale decreased to 38 d .7, stopped, 

 then decreased to 34 d .9 at 20: 44.2; 30:20:46, then increased to 36 d .2; 30:21:13, scale in- 

 creased to 26 d . 2; 30:21:14, decreasing to 28 d .i; 30:21:40, reading 6 d .4 estimated; 30:21:46, 

 daylight ends. 



April, 1904. 1:20:00, revolver not taken to hut; 1:20:06.5, decreased to 28 d .o. 

 3:00:00, revolver not taken to hut; 3:00: 36. 4 ( scale increased to 78 d . i; 3:00:38, scale 

 decreased until passed out of field of view; 3:02:26, daylight begins. 4:08:00, revolver 

 not taken to hut ; 4: 10: 58, scale increased to 72 d .9. 5: 12:00, revolver not taken to hut. 

 6:02:00, sky clear, calm; 6:16:14, instrument slightly out of level. 7:16:00, sky clear, 

 calm. 8 : 20 : oo, sky clear, light north wind. 10 : 02 : 08, scale decreased to 65 d .2 ; 

 10:03: 20, scale increased to 52*. 2 ; 10: 05:44, reading 78 d .7 estimated. n : 08 : oo, northeast 

 wind of 40 miles per hour velocity. 12: 12:00, revolver not taken to hut ; 12: 12: 08, magnet 

 oscillating up and down. 13:00:00, light southwest wind; 13:07:00, wind south, hazy, 

 light snow; 13:09:12, from quiescence scale decreased; 13:16:59, scale now 2o d .6. 



