Report of the Keio Committee. 415 



Table II. 



Observations for the Absolute Measure of Horizontal Force. 



Month. 



logy 



mean. 



Log mX 

 mean. 



Value of m*. 



1885. 









October 29th and 30th . . 



9-12250 



0-30825 



0-51925 



November 26th 



9-12195 



-30872 



0-51919 





9-12187 



-30874 



0-51916 



1886. 











9-12154 



'30902 



0-51913 



February 24th 



9 -12184 



0-30923 



0-51943 





9-12221 



0-30860 



0-51928 





9-12230 



30865 



0-51937 





9 -12086 



0-30800 



0-51812 



May 27th 



9-12103 



-30932 



-51901 





9-12095 



0-30b36 



0-51838 



July 23rd . 



9-12171 



0-30807 



0-51867 





9-12193 



0-30775 



0-51861 



September 27th 



9-12122 



0-30823 



0-51847 



Table III. — Solar Diurnal Range of the Declination. 



Hour. 



Summer 

 mean. 



Winter 

 mean. 



Annual 

 mean. 















+ 5 / -6 



+ 2'-9 



+ 4' 3 



1 



+ 6-8 



+ 4-8 



+ 5-8 



2 



+ 6-0 



+ 4-4 



+ 5-2 



3 



+ 5-0 



+ 3-5 



+ 4-3 



4 



+ 2-8 



+ 15 



+ 2-2 



5 



+ 1-8 



+ 0-6 



+ 1-2 



6 



+ 0-7 



-0-5 



+ 0-1 



7 



-0-2 



-0-4 



-0-3 



8 



-0-3 



-1 -o 



-0-7 



9 



-0-3 



-0-9 



-0-6 



10 



-0-9 



-1-3 



-1-1 



11 



-0-7 



-1-3 



-1-0 



12 



-1-0 



-1:8 



-1-2 



13 



-1-2 



-1 1 



-1-2 



14 



-20 



-0-8 



-1-4 



15 



-22 



-0-4 



-1-3 



16 



-25 



-0-8 



-1-7 



17 



-30 



-0-7 



-1-9 



18 



-3-8 



-09 



-2-4 



19 



-4-0 



-1-3 



-2-7 



20 



-4-2 



-1-5 



-2-9 



21 



-3 5 



-21 



-2-8 



22 



-1-5 



-1-7 



-1-6 



23 



+ 1-8 



+ 0-8 



+ 1-3 



# m = moment of vibrating magnet. 



