124 



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



trended more south-west. The longitude is given below on the two suppositions of latitude 

 81 30' and 81 34'. 



With f = 81 30', LT-I = o* 45 55s and E. Long. = 3* 44m 15s _ J = 56 4' - J. 

 " y> = 81 34, LT-1=3 48 4 and E. Long. = 3 46 24 -^=5636-^. 



After some hours of rowing from midnight Aug. 1718 (estimated distance 68 miles), 

 towards Cape Clements Markham, about SSW by compass, the travellers met the drifting ice 

 and turned more eastwards to the firm ice. As the south-westerly wind freshened up, and the 

 ice closed in, they were detained for several days on the ice off Cape Hettand, where the 

 following observations were taken. 



1895, August 19. Bar. 741 mm, Temp. - 0.9. Height of eye 18 feet, Ind. corr. + 4'. 



The assumed latitude was 81 25'. Applying the correction dy = 1'.5, according to the 

 following observations, the result is 



Watch I 2fc 21">, LT-I = 3h 49m 43s and E. Long. = 3h 48m 31* - 4 = 57 8' - 4. 



As the dead reckoning gives u somewhat smaller longitude, and the bearing of the two 

 camps of August 17 and 19 had been estimated as nearly true north and south, it is possible 

 that the apparent horizon has been elevated, as was manifest some days later on (see below). 

 Assuming the same value of Jh = -J- 5' as then (though the meteorological conditions were 

 not quite the same, the southerly wind being considerably stronger during this stay), the result 

 would be 



LT-I = 3h 47m 29s and E. Long. = 3h 46m 17 - ^/ = 56 34 - ^ 



1895, August 20. Same place. Bar. 743.5 mm, Temp. - 2.l. Ass. Hor. Point 89 51'. 



These values were calculated with the assumed LT I = 3 h 50 m . If the second result 

 for August 19 be adopted, LT-I would be 3h 47m ig s O r Jt = - 2m 41 = - 40' and 



N. Lat. = 81 26'.8 



or nearly the same as originally assumed on August 19. The influence on the longitude is 

 insignificant 



