126 



GEELMUYDEN. ASTRONOMICAL OBSERVATIONS. [NORW. POL. EXP. 



1896, April 18. Bar. 759.0 mm, Temp. - 23.5C. Circle Hor. Point 89 51' + x. Ass. 

 Lat. 81 13'. 



"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 gh 40m pm LT-I = - 52m & - 0.502 x 

 8 44 " " =-54 6 + 0.501 x 



Mean 



8h 42m 



= _ 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' + x, Sun's Semidiameter = Tabular 

 Value + y. Ass. Lat. 81 13'. 



Combinations of the 6 th and 9 th observations with the others give x = 

 y = + 1'.9, by which the values in the last row have been deduced. The mean is: 



1'.5 and 



Watch I 



9m pm , LT-I = - 53m 358. 



Attitudes of the Moon. Circle Hor. Point = 89 52' + x. For the coordinates of the Moon 

 assumed Watch 4l> 35 m 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 x and y. 



