Comparisons of Magnetic Standards, 1905-14 



241 



Table 14A. jBes/( 0/ Declination Comparisons at the Kew Ubsermlury, 1908-1910. 



Series, Date 



Local mean time 



From 



To 



Declination obtained 



C.I.W. 



Kew 



C.I.W. - 

 Kew 



Remark.s 



1908 

 Mar. 10 

 10 

 10 

 10 

 11 

 11 

 11 

 11 

 11 

 12 

 12 

 13 

 13 

 17 

 17 



Mean . 



II 



1910 



Mar. S 



8 



8 



8 



8 



8 



9 



9 



9 



9 



9 



11 



11 



11 



h m 

 12 20 

 15 15 

 15 37 



15 50 

 9 04 



10 52 



12 36 



13 00 



14 19 

 14 38 



16 28 

 9 14 



10 58 



13 08 



14 26 



h m 

 12 29 

 15 24 

 15 46 



15 59 

 9 10 



10 58 



12 43 



13 07 



14 26 

 14 44 



16 34 

 9 20 



11 05 



13 14 



14 35 



-16 22.4 

 21.8 

 21.5 

 20.8 

 17.0 

 19.6 

 24.4 

 25.5 

 23.9 

 21.4 

 19.2 

 14.8 

 18.2 

 27.7 

 24.9 



-16 22 

 22 

 22 

 22 

 IS 

 20 

 24 

 25 

 23 

 21 

 19 



16.7 

 19.8 

 27.1 

 24.9 



-16 03.2 

 08.6 

 09.3 

 09.3 

 08.8 

 06.7 

 05.1 

 09.4 

 10.2 

 09.6 

 09.6 

 10.2 

 11.2 

 10.7 



-16 



04.7 

 09.5 

 09.9 

 10.2 

 09.7 

 07.9 

 05.7 

 09.8 

 10.9 

 10.5 

 10.3 

 10.7 

 11.7 

 11.1 



Mean 



Mean value of (C. I. W. Kew) from I and II . 



+0.3 

 + 1.1 

 + 1.1 

 + 1.4 

 + 1.9 

 +0.6 

 -0.1 



0.0 

 -0.4 

 -0.2 

 -0.1 

 + 1.9 

 + 1.6 

 -0.6 



0.0 



+0.57 



+ 1.5 

 +0.9 

 +0.6 

 +0.9 

 +0.9 

 + 1.2 

 +0.6 

 +0.4 

 +0.7 

 +0.9 

 +0.7 

 +0.5 

 +0.5 

 +0.4 



+0.76 



Before extensive field work with 

 C. I. W. magnetometer No. 5. 



+0.7 



After extensive field work with 

 C. I. W. magnetometer No. 5. 



'Half set; weight, 0.5. 



