Comparisons of Magnetic Standards, 1905-14 



257 



nately, there was no exchange of stations to determine station-differences, as it was reported 

 by the Observatory that no local disturbance existed in the immediate neighborhood of the 

 station; subsequent examination, however, showed that such disturbance did exist, and it 

 is, therefore, not possible to utiUze all the observations. 



The Galilee party on the third cruise during March 1907, again made observations, 

 without exchange of stations, at several stations within the Observatory inclosure, but 

 could not occupj" the absolute station, as at that time the old absolute house was being 

 replaced by a new one. In addition to the unsuspected local disturbance, as reported 

 after the first visit in May 1906, there seem to have been at this time other disturbances 

 due to the building operations. 



Table 23 A. Results of Declinalion Comparisons at the Samoa Observatory, 1906. 



Table 23 B. Results of Horizontal-Intensity Comparisons at llie Samoa Observatory, 1906. 



T.\BLE 23 C. Results uf Inclination Comparisons at the Samoa Observatory, 1906. 



Series; 



Date 



Local mean time 



From 



To 



Needles 



used 



with 

 D.C. 171 



Inclination obtained 



C.I.W. 



Samoa 



C.I.W.- 



Samoa 



Remarks 



j 1906 

 I : May 3 

 4 



8 



h m 



16 43 



7 50 



8 59 



h m 

 17 21 



8 35 

 10 00 



1 and 2 



-29 15.2 

 13.0 

 11.7 



-29 14.0 

 14.1 

 (13.3) 



II 



Mean. 

 Dec. 8 



-29 21.1 

 20.4 

 IS. 2 

 17.3 



Mean 



Weighted mean value of (C I. W. Samoa) from I and II. 



-0.6 

 + 1.1 

 + 1.6 



Weight, 0.5. 



+0.5 



+0.8 



+ 1.3 



+0.9 



0.0 



+0.8 



+0.6 



