31 



Result — Chronometer No. 2557, fastof sidereal time h. m. s. 

 for this station (at 6/t. 07ni.) - - - + 1 26 45.58 



By comparison — Chronometer No. 141 was slow of 

 mean solar time for this station (at Ih. 'S8m. 

 mean time) - - - - - — 4 43.48 



8th. 1859, March ^th. At the same Station. 

 Sidereal chronometer No. 2557, fast: h. m. s. 



By 10 ob:?ervati()ns on /3 Tauri, west (at 9h. S'Srn.) 1 27 15.26 



By 12 obscrvalions on « Bootis, east (at 10/t. 07///.) 1 27 15.71 



Result — Chronometer No. 2557, fast of sidereal time 



for this station (at 9/i. 50//Z.) - - - + 1 27 15.48 



By comparison — Chronometer No. 141, was slow of 

 mean solar time for this station (at llA. 00/k. 

 mean lime) - - - - - — 4 43.52 



9//;. 1859, March 8th. At the same Station. 

 Sidereal chronometer No. 2557, fast: 



\st Set. 

 By 8 observations on <x. Arietis, west h. m. s. 



(at 6A. 04//Z. 38s.) - - 1 27 40.29 



By 8 observations on y' Leonis, east 



(at 6/«. 28m. 22s.) - - 1 27 40.71 



\st Result — Chronometer No. 2557, fast (at 6A. h. m. s. 

 I6m. 30s.) - . - - . -L 1 27 40.50 



By 6 obs. on a, Tauri, west, and 9 obs. 



on /3 Tauri, also west, giving 



weight according to the number 



on each (at 9A. 09m.) - - 1 27 41.10 



By 16 observations on cc Bootis, east 



(at lOA. 25m.) - - 1 27 41.56 



26i72esw/^— Chronometer No. 2557, fast (at 9A. 47m.) -f 1 27 41.33 



