Reduction Formula and Instrumental Constants 



243 



Inclination Observations with Sea Dip-Circle at Shore Station 



Station: A, Suva Vou, Fiji 

 Dip Cirele: No. 189 



Date: Mon., Jmie 17, 1912 

 Needle: No. 5 



Obs'r: H. D. F. 

 Chron'r: No. 51 



'Polarity reversed by 10 strokes of bar magnets on each face. 



-The 30-oaIled polarity-correction. 



