42 



By comparison — Chronometer No. 141, was slow 



of mean solar time for this station (at lO/i. 02m. h. m. s. 

 mean time) - - - - . — 4 49.83 



26th. 1859, June 2Uh. At the same Station. 

 Sidereal chronometer No. 2557, fast: 



1st Set. 

 By 12 observations on a, Lyroe, east h. m. s. 



(at 15/t. 25771.) - - - 1 41 02.05 



By 12 observations on x Canum 



Venaticorum, west (atl6/i. 02?7z.) 1 41 01.82 



1st Result — Chronometer No. 2557, 



fast (at 15/i. 42m.) - - 1 41 01.94 h. m. s. 



h 1 41 01.94 



2d Set. 



By 9 observations on <^ Leonis, west 



(at 15h. 11m.) - - 1 41 01.74 



By 9 observations on ^ Cygni, east 



(at 10/t. 46/71.) - - - 1 41 02.16 



2d Resvlt — Chronometer No. 2557, 



fast (at 15/j. 58m.) - - I 41 01.95 



Sd Set. 

 By 9 observations on /3 Cygni, east 



(at 15^. 4677i.) - - . 1 41 02.33 



By 11 observations on e Bootis, west 



(at ISA. 18771.) - - - 1 41 02.52 



Sd Result— Chronometer No. 2557, 



fast (at 17A. 02m.) - - 1 41 02.42 



+ 1 41 01.95 



-f 1 41 02.42 



Result adopted — Chronometer No. 2557, fast of si- 

 dereal time for this station (at IQh. l^m.) + 1 41 02.10 



By comparison — Chronometer No. 141, was slow of 

 mean solar time for this station (at 10/t. 03777. 

 mean time) - - - - - — 4 50.21 



