28 



Art. 3— K. Sotome : 



The correction to tlie closing sum is to be distributed equally 

 among the groups, so that the quantity, — 



0.18 

 12 



xll-^2 = 0.083 



is to be added to the above. The resulting quantities constitute 

 the reductions of the star places to a true homogeneous system, — 



Combining these with the said corrections to the latitude ob- 

 servation, we apply the usual process of reduction and form differ- 

 ences with the mean of all of them. Arranging them with respect 

 to seasons, w^e have, — 



These are the corrections to the latitude variation which may 

 be looked upon as common to all stations. Therefore naturally 



