Comparisons of Magnetic Standards, 1915-21 



415 



Table 4B. Results of Declination Comparisons at the Standardizing Magnetic Observatory of the Department of 



Terrestrial Magnetism at Washington, 1915. 



' All values are referred to station Sm\ Sm = Nm-'; 0'.5, as derived from this series. Observers: D. O. No. 1977, C. A. 

 French of the Dominion Observatory; C. I. W. No. 3, H. W. Fisk of the Department of Terrestrial Magnetism. 

 * These are values obtained with C. I. W. No. 3 referred to I. M. S.; I. M. S. C. I. W. No. 3= -O'.l. 



Table 4C Results of Declination Comparisons at the Standardizing Magnetic Observatory of the Department of 



Terrestrial Magnetism at Washington, 1915. 



'See p. 416 



2 See p. 416. 



