508 PROFESSOR CHALLIS, ON THE DETERMINATION OF THE LONGITUDE 



Fourth Set — continued. 



Fourth Set — continued. 



Notes. 

 No. 5, TVs observation has not been altered. No. 23, the Greenwich time has been 

 increased by 1*. No. 62, 63, and 65, the Greenwich times have each been increased by I s . 

 (See the observations.) Nos. Ill and 113, the Cambridge time has been corrected by — I s in 

 the former, and by + I s in the other. 



Determinations of the Longitude by the Signals of May 18. 



First Set. 



First Set — continued. 



