1392. | Repetition of Angles. 71 
Correction for inclination of 
Bee Total. foe of observed 
ap ifference. 
qrepetitions.| _ a tical axis horiz. axis 
10 12°07 —5°99 6:07 od 
1] 14°78 —5'99 8°79 35 
12 13°16 —5'99 Tale 6°25 
13 13°17 —5'99 7°18 ‘Zo 
14 14°80 —5'99 8°81 8°95 
15 12°98 —5°99 6°99 Ke O 
16 14:01 —5'99 8:02 8°15 
17 14°46 —d5'99 8°47 7°95 
18 13°12 —5'99 (1:83 7:8 
19 14°55 —5'99 8°56 9°0 
20 14:05 —5'°99 8:06 8°65 
743 13°50 —5°99 75 JI 7°65 
The coneordance of the calculated corrections with the observed 
differences between the series differing 180° in origin may be seen 
better in a diagram. 
‘Seconds 
The dotted line represents half the observed differences, and the 
black line, ‘she calculated corrections ; their agreement, although 
‘Satisfactory, would perhaps have been still closer if the inclinations 
