CAPE EVANS. SERIES " D." 



(AUG. 13TH TO 17TH.) 



Little comment is required cm this last series. The actual observations were made 

 in precisely the same manner as those of July 12th to 16th (Series " C "). 



The observations for time were, however, defective in this respect, that during 

 the whole of the series a blizzard was raging, and this prevented the possibility of getting 

 intermediate determinations of time. 



In applying the time correction, considerable trouble was experienced as a result 

 of the fact that, between the two sets of star sights, the rate of " S.C." experienced a 

 change of considerable magnitude, due presumably to the winding of the clock. It 

 has therefore been thought advisable to calculate the rate of " S.C." on each day from 

 comparisons with " E," on the assumption that the rate of " E " remained constant 

 between the two sets of time sights. 



The results of intercomparison of ' ; S.C." and " E " gave the following results : 



S.C."" E." 



Aug. 12th, 9 p.m., to 13th, 9 p.rn 236-59 sees, per day. 



13th 14th . . 236-41 



14th 15th .. 236-31 



15th 16th .. .. 236-42 



16th 17th .. .. 235-64 



17th 18th, a.m 235-69 



The following differences per day have therefore been assumed for " S.C."- ' E " 

 at the times of pendulum observation : 



Aug. 13th, a.m. observations, 236-58 sees. Aug. 16th, p.m. observations, 236-03 sees. 

 13th, p.m. 236-50 17th, a.m. 235-64 



14th, a.m. 236-41 17th, p.m. 235-69 



14th, p.m. ,, 236-36 



,. 15th, a.m. 236-31 



15th, p.m. 236-36 



16th, a.m. ,, 236-42 



53 D 3 



