Reduction Formul.« and Instrumental Constants 

 The adopted inclination-corrections are taken from Table 60. 



Table 60. — Inclinatian Corrections for Sea Dip-Circle 189. 



251 



'Needles was substituted for needle 10 in June 1911. 



'Method 2 only is used for needle 6; this needle was seldom used during Cruise II. j ^ . j- 



'Mean value for needle 7 in "direct" and "reversed" position, deflected by needle 8 at short deflecUon-distance. 

 *Mean value for needle 7 as for footnote 3, hut at long deflection-distance. 



