27 



2d. 1858, August ^tli. At the same Station, 



Sidereal chronometer No. 2557, fast: 

 By 8 observations on a Coronse Bo- 



realis, west (at 19A. 16m.) using h. m. s. 



horizon roof No. 1, - - 1 03 47.53 



By 9 observations on cc Andromedce, 



east (at 20/^. 12m.) using, also, 



horizon roof No. 1, - - 1 03 46.19 



By E. and W. stars (at 19/i. 44w.) 



with horizon roof No. 1, + 1 03 46.86 h. m. s. 



\- 1 03 46.86 



By 8 observations on a. Coronas Bo- 

 reaiis, W. (at 19A. 30m.) using 

 horizon roof No. 2, - - 1 03 46.78 



By 9 observations on u. Andromedse, 

 E. (at 19//. 56m.) using, also, 

 horizon roof No. 2, - - 1 03 46.57 



By E. and W. stars (at 19/t. 43m.) 



with horizon roof No. 2, - 1 03 46.68 



+ 1 03 46.68 



Result — Chronometer No. 2557, fast of sidereal time 

 for this station (at 19/f. 43m. 305.) by 16 observa- 

 tions on « Coronse Borealis, west; and 18 obser- 

 vations on cc Andromedce, east - - -j- 1 03 46.77 



By comparison — Chronometer No. 141, was slow of 

 mean solar time for this station (at \0h. 50m. 

 mean time) - - - - - — 4 31.95 



Sd. 1858, August \2th. At the same Station. 1st Determina- 

 tion — By East and West Stars. 

 Sidereal chronometer No. 2557, fast: 

 By 15 observations on « Coronse Borealis, W. (at h. m. s. 



19/i. 33m.) - - - . - 1 04 31.26 



By 15 observations on cc Andromedse, E. (at 19/j. 



55m.) - - . . - I 04 31.58 



