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Special Reports 



i All values are referred to N; N = Hut +0'.6. 

 Table 7B. Results of Horizontal-Intensity Comparisons at the Helwan Observatory, 191S. 



'All values are referred to N; N = Hut + 3y. 

 Table 7C. Results of Inclination Comparisons at the Helwan Observatory, 1918. 



' All values are referred to S; S = Hut O'.S. 



SUMMARY. 



Table 7D summarizes the chief results as already published in Volume II" and as 



given above. 



See Res. Dep. Terr. Mag., Vol. II, pp. 235-238. 



