224 



APPENDIX. 



" Captain Phipps's pocket watch, made by Mr. 

 '* Arnold, when compared with the regulator at Green- 

 " wich, May 26th, was twenty-four feconds too flow; 

 " it was there found to lofe twelve feconds and a quarter 

 *' a day on mean time. From this it is eafy to find 

 *' what time it is at Greenwich at any moment fhewn by 

 ■*' the watch. 



"The watch was compared every day about noon 

 *' with the two time-keepers made by MefT. Arnold and 

 " Kendal; and from this comparifon, and their rates of 

 *' aoino previoufly fettled at Greenwich, together with 

 " knowing how much they differed from mean time at 

 *' Greenwich before we fet out, was calculated the table 

 «' which fhews wh^t the mean time is at Greenwich 

 *' according to each time-keeper, when the watch is at 

 *' twelve hours. 



" By the help of this table, we may eafily find the 

 <' longitude of the (hip, as deduced from the going 

 *' of each time-keeper. Having found how much the 

 " watch is too fan: or too flow for mean time at the 

 " fhip, we know what the mean time is at the {hip 

 ♦' when the watch is at twelve hours ; and by the table 

 <' we can find what is the mean time at Greenwich at 

 *' the fame time, fuppofing each time-keeper had kept 

 <' the fame rate of going as it had before our departure: 

 4 the 



