220 



Ocean Magnetic Observations, 1905-16 



Ocean Magnetic Observations: Total Intensity {F by Deflection Method) 



(Form 28iJ, reverse side of Form 28) 



Station: At sea 



Date: Sat., Aug. 23, 1913, P. M. 



Dip circle: D. C. 189 



Needle: 7 suspended; 8, deflecting 



Weather: be 



Sea: S to M 



Lat: 39° 29' N 

 Vessel: Camegie 

 Chron'r: 256 

 Course: NNE 

 Wind: S, 2 

 Roll: 3° s. to 4° p. 



Long: 39° 51' W 

 Com'd'r: W. J. P. 

 Obs'r: C. C. C. 

 Rec'd'r: C. W. H. 

 Comp'r: C. W. H. 

 Beviser; C. C. C. 



End of suspended needle marked A north 



Distance: Short 



Circle East 



Needle Face East 



Circle West 



Needle Face West 



Micro. Direct 



Micro. Reversed 



Micro. Reversed 



Micro. Direct 



N 



N 



N 



N 



209.0 

 9.0 



29.0 

 8.8 



282.0 

 2.0 



101.5 

 2.0 



258.0 

 8.5 



78.0 

 8.5 



331.5 

 1.5 



151.5 

 1.5 



208?95 

 65.42 



281 ?88 

 36.46 

 Mean / : +65?27 



258?25 

 36.62 

 Meanu,:36?54 



331?50 

 65.12 



Suspended needle turned face about on bearings 



Distance: Short 



Circle West 



Circle East 



Needle Face East 



Needle Face West 



Micro. Direct 



330.8 

 1.2 



N 



150.2 

 0.5 



Micro. Reversed 



Micro. Reversed 



258.0 

 8.0 



78.0 

 8.0 



281.0 

 1.0 



N 



101.0 

 1.5 



Micro. Direct 



208.0 

 8.0 



N 



28.5 

 8.0 



330?68 

 65.66 



258 ?00 

 36.34 

 Mean/: +65?14 



281T12 

 36.50 

 Meanui: 36?42 



208? 12 

 64.62 



Resulting Dip, /: +65?20 



Resulting Deflection-Angle, Ui : 36?48 



Time, Temperature, Remarks 



Summary of /-values, Aug. 23, 1916 



jinnmg 

 Ending 



Means 



L. M. T. 



Time 



h m 

 5 27 

 5 58 



5 42 



14 35 



Temp. 



Instr. 



°C 

 29.1 

 29.1 



29.1 



D. C. 189 

 D. C. 189 

 D. C. 189 

 D. C. 189 



Needle 



Observed 

 / 



7S 

 7L 

 5 

 9 



Magnetic articles removed: Yes 



Gimbal circle reads: 22?5 and 



202?5 



Weighted Mean 

 E.I. 3 



Adopted / 



+65.20 

 +65.42 

 +65.29 

 +64.99 



+65.22 



Cor- 

 rec'n 



+0.02 

 -0.10 

 -0.07 

 +0.08 



-0.02 



Corr'd 

 / 



Wt 



+65.22 

 +65.32 

 +65.22 

 +65.07 



+65.19 

 +65.20 



+65.20 



