37 



15/ Set. 

 By 9 observations on oc. Coronse Bo- h. m. s. 



realis, east(at 12/i. 18m.) - 136 51.65 



By 10 observations on s Leonis, west 



(at I2h. 40m.) - - 1 36 50.96 



1st Result — Chronometer No. 2557, fust (at 12/i. h. m. s. 

 29m.) - - - - H- 1 36 51.31 



2d Set. 

 By 8 observations on /3 Geminorum, 



west (at I2h. 04m.) - - 1 36 50.75 



By 8 observations on ^ Herculis, east 



(at I2h. 34m.) - - 1 36 51.58 



2d ReswZ/— Chronometer No. 2557, fast (at 12^. 



19m,.) - - - - + 1 36 51.16 



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

 dereal time for this station (at 12//. 34m.) + 1 36 51.24 



By comparison — Chronometer No. 141, was slow of 

 mean solar time for this station (at 8/*. 27m. 

 mean time) - - - - - — 4 41.08 



20th. 1859, May 22d. At the same Station. 

 Sidereal chronometer No. 2557, fast; 

 By 10 observations on « Coronre Bo- h. m. s. 



realis, east (at 12/i. 14^7/1.) - 1 36 58.55 



By 4 observations on f Herculis, also 



east(at 12/i. 57m.) - - 136 58.59 



By 14 observations on 2 East Stars, 



jzivins weight accordino; to the 



number on each, (at V2h. 36m.) 1 36 58.56 //. m. s. 



L 1 36 58.-56 



By 11 observations on e Leonis, west (at \2h. 44m.) + 1 36 58.15 



Result — Chronometer No. 2557, fast of sidereal time 



for this station (at 12^.. 40m.) - + 1 36 58.35 



