Art. 3 — K. Sotome: 



l'i of 1=1. "15 l'i of II = 1."15 



From this table we see the fact that the displacement in 

 the winter is about four times as large as that in the summer, when 

 reduced to the same interval. 



Under such circumstances, the question suggested itself, in 

 making the reduction of observations, " Does tlie bubble displace- 

 ment correspond exactly to the change of inclination of the 

 telescope ? ' ' 



Thereupon I made tentative reductions from two extreme 

 standpoints: 



