for determining the difference of meridians , &c. lois. 



July 20. The rockets this evening were miserably bad; 

 five only were observed ; the eighth however might have 

 been a good one ; it was lost by all the observers looking: 

 for it too late. 



Comparisons of Chronometer and Clock. 



Chronometer. Clock. 



Before 9'' 6" le** 58" 53.06s 



After II 10 1 19 3 »3-34 



Mean Error and Rate of Sidereal Clock. 

 Mean of 5 • ^ I Mean error. I Mean rate 



iji* 40" 



47.228 



-^0.03" 



Comparison from 19th to 20th, + 0.35 

 Chronometer fast i"* 16.618 



