41 



Resvd adopted — Chronometer No. 2557, fast of si- h. m. s. 

 dereal time for this station (at 15//. 53m.) + 1 39 18.29 



By comparison — Chronometer No. 141, was slow of 

 mean solar time for this station (at 10//. 37m. 

 mean time) - - . - - — 4 46.59 



'Zoth. 1859, June. 22d. At the same Station. 

 Sidereal chronometer No. 2557, fast: 



Is^ Set. 



By 10 observations on (^Leonis, west h. m. s. 



(at loh. 16m.) - - 1 40 48.05 



By 10 observations on B Cygni, east 



(at 15//. 29m.) - - 1 40 47.96 



Is^ /?fs?//^— Chronometer No. 2557, 



liast (.It 1.5//. 22m.) - - 140 48.00 h. m. s. 



\- 1 40 48.00 



2d Set. 

 By 9 observations on 64 (or 12) Canum 



Vonaticorum, west (at 15//. 40m.) 1 40 47.63 

 By 11 observations on a Lyrse, east 



(at 15//. 56m.) - - 1 40 48.05 



2d Result — Chronometer No. 2557, 



last (at 15//. A&m.) - - 1 40 47.84 



H- 1 40 47.84 



3d Set. 

 By 12 other observations on a3 Cygni, 



east (at 16//. 23m.) - - 1 40 48.06 



By 17 observations on e Bootis, west 



(at 17//. 41m.) - - 1 40 48.31 



Sd Result — Chronometer No. 2557, 



fast (at 17//. 02m.) - - 1 40 48.18 



+ 1 40 48.18 



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

 dereal time for this station (at 16/t. 04m.) + 1 40 48.00 



VOL. VII. 



