Comparisons of Magnetic Standards, 1905-14 



265 



All values are referred to H; H = N -\- 1'.4. 

 Table 28 B. Results of Horizontal-Intensity Comparisons at the Zikawei Observatory, 1907. 



'.\11 values are referred to H; H = A' 14y. -Quarter set; weight, 0.25. 'Half set; weight, 0.5. 



Table 28 C. Results of Inclination Comparisons at the Zikawei Observatory, 1907 



'All results are referred to H; H^N+O'.i. 



The method of comparison for series I was that of simultaneous observations and 

 exchange of stations. For series II, the Observatory data were derived from the magneto- 

 grams as standardized by the Observatory instruments mentioned above. The dip observa- 

 tions in September 1907 were insufficient for comparisons. 



The next comparisons (1911) were obtained by Dr. C. K. Edmunds, in connection with 

 the magnetic survey of China, at the Lukiapang Observatory, which succeeded the Zikawei 



