ox SEISMOLOGICAL INVESTIGATION. 



275 



Table II. 



Table III. 



Noon 



IP.M. 



3 „ 



4 „ 



5 „ 



6 „ 



7 „ 



8 „ 



9 „ 



10 „ 



11 „ 

 Midnt. 



1 A.M. 



2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 



The meaning of the positive sign in Table II. and elsewhere is that 

 the spot of light has travelled towards the east. So far as Table II. 

 shows anything, it exhibits a tendency for the first eastern elongation, 

 that in the afternoon, to occur earlier in the day as the year advances, also 

 that the amplitude of the afternoon excursion, whether east or west, is 

 greater than that in the morning, and that the maximum effect occurs in 



T 2 



