xcv 
LATITUDES, AND LONGITUDES BY CHRONOMETERS, DURING 
THE SEASON OF NAVIGATION IN 1820. 
The Authority on which the Correction of the Chronometer No. 259 
to Mean Greenwich Time is founded, is shewn in the Account of the Going 
of the Chronometers, Appendix, pages x and xi. 
The Longitude by No. 259 is the Result of the Elements contained in 
the Table ; the corresponding Longitude by the Mean of the four Chro- 
nometers selected for final Determination occupies the last Column, and may 
be examined by means of the Table which follows the Abstract of Obser- 
vations in 1 820. 
