40 



Ocean Magnetic Observations, 1905-16 



each heading, the 32 readmgs taking, on the average, 3 to 5 minutes. The time and tem- 

 perature are recorded, in the lower part of the form, at the beginning and ending of the 

 observations on each heading. 



Magnetic Obsei-vations on Swing: Total Intensity (F) 



(Form 12a) 



Station: San Francisco Bay Chronometer H. W. 



Date: May 25, 1908, A. M. 

 Dip Circle: No. 189 



Needle: No. 3 suspended; No. 4 deflecting 

 Distance: Long 



Obs'r: P. H. D. 

 Rec'd'r: G. P. 



