From the actual sights, we obtain a mean value for sidereal time " E "=236-46 

 sees, daily, from which we are able to deduce the following results : 



Correction to 

 time of swing. 



1st set of observations, " S.C." gaining 0-13 sec. daily -- 8XlO~ 7 sec. 

 2nd 

 3rd 

 4th 

 5th 

 6th 

 7th 

 8th 

 9th 

 10th 



The actual observations for time are set down in Table XXXVIII. 



TABLE XXXVIII. 



From the Table, it will be seen that the mean azimuth correction is 7-70 sec. 

 on each day, so that no error is introduced on account of uncertainty in the value of 

 this constant. 



54 



