126 GEELMUYDEN. ASTRONOMICAL OBSERVATIONS.  [NORW. POL. EXP. 
1896, April 18. Bar. 759.0 mm, Temp. — 28°.5C. Circle Hor. Point 89° 51'+ a. Ass. 
Lat. 81° 13/ 
Watch I Hor. Cirele || LT—1 - : 
hemiers 
8 15 10 pm | Sun L. 
FORO Si MOLT Bay 
55 15” ”" UL. 
9 451” | pp it 
“Sun’s limbs indistinct. Observation interrupted in the middle by a bear looking on.” 
There seems to be an error in the second or third observation, but as a correction cannot 
be made without arbitrariness, and the limbs of the low Sun were indistinct, the numbers have 
been retained as they stand. The result is then: 
Watch I 8b 40m pm LT—I = — 52m 8s — 0.502 x 
2 8 4 ” » =—h 6 +0501 x 
Mean ” 8b 42m pm “== — 53m 7s 
1896, April 20. A series of 9 altitudes were taken of the Sun, and are used below for 
determination of local time, 6 altitudes of the Moon, used for latitude, 4 lunar distances, and 
2 bearings of the Sun by compass. 
Bar. 756.4 mm, Temp. — 22° C. 
Altitudes of the Sun. Circle Hor. Point 89° 52‘ + a, Sun’s Semidiameter = Tabular 
Value + y. Ass. Lat. 81° 13’ 
Watch I Vert. Cirele | LT—I ts i 
hm i s | ° 4 m s mes 
459 8pm] SunL. L 105 28.5 — 52 53 +0488 (x —y) = — 34 — 0.219 
5 6 is x 4 74 30 || —53 23 — 0480 (x+y) =— 53 34 — 0.202 
6 46 46 ” os Z 78 11.2 || —52 47 — 0.487 (a+ ¥} aS + 0,005 
22610) 2 ve Ee 100 42 || — 52 39 4 0.444 («—y) =— 11 0.081 
32 31 ” ie 79 53.5 — 52 52 — 0446 (a+ y) =—53 3 0.093 
39 35 ” ame celss 79 31.7 — 55 33 — 0.448 (xy) =— 54 0 0.102 
Sia Oe she Nhe 81 12 || —53 11 — 0468 (a+ y) =— 53 22 0.169 
18 13 ” x4 a4 98 10 || —51 44 +0476 (« —y) =—538 19 0.192 
23 58 ” 2A 98 33.2 — 53 26 + 0.480 (71+ y) =—53 12 0,202 
Combinations of the 6th and 9th observations with the others give «= W— 1/5 and 
y =-+ 1°9, by which the values in the last row have been deduced. The mean is: 
Watch I 7h 9m pm, LT—I = — 53m 35s, 
Altitudes of the Moon. Circle Hor. Point = 89° 52'+ a. For the coordinates of the Moon 
assumed Watch 4h 35™ in advance of Gr. M. Time, corresponding to East Long. 55° 20’. As for 
the Sun, the Semidiameter was put = Tabular Value + y; but as the upper and lower limb were 
not equally suitable for observation, especially for the first two altitudes, during which the lower 
limb must have been some 15° out of the vertical (as measured from the Moon’s Centre) only 
the last four observations were used for the determination of a and y. 
