91 



Isi. Observations for the Latitvde. 1859, June 8th. 

 By 14 altitudes of Polaris, north, combined with 2 altitudes of a, Vir- 



ginis S., observed at 16 and 21 minutes of time after meridian 



passage, we get: 

 Latitude of station (approximate), - - 41° 49' 56" 



Reduction to the point of intersection of Main and 



Fourth streets, - - - - — 2" 



Latitude (approximate) of the intersection of Main 



and Fourth streets, - - - 41° 49' 54" N. 



The sky to the south was so cloudy, that a satisfactory set of obser- 

 vations on a star passing the meridian to the south of our station, 

 could not be obtained to combine with those on Polaris, north, for the 

 latitude. The index error of the sextant had, however, been very 

 carefully measured on the day of these observations, and hence we 

 believe that the latitude, here stated, is within four or five seconds of 

 the truth, which is quite near enough for satisfactory results in com- 

 puting the lime from altitudes of East and West Stars, two sets of 

 which were obtained to-night. 



2d. Observations for the Time. 

 Sidereal chronometer No. 2557, fast : 



1st Set. 

 By 12 observations on y' Leonis, west h. m. s. 



(at 14A. 02m.) - - - 1 33 36.16 



By 11 observations on oc Lyrse, east 



(at 15/i. 06m.) - . - 1 33 36.29 



1st Result — Chronometer No. 2557, 



fast(at 14/t. 34m.) - - 1 33 36.22 h. m. s. 



+ 1 33 36.22 



2d Set. 

 By 11 observations on /3 Cygni, east 



(at 15/i. 29m.) - - - 1 33 36.55 



By 9 observations on e Bootis, west 



(at 18/?. 06m.) - - - 1 33 36.92 



2d Result — Chronometer No. 2557, 



fast (at 18/i. 06m.) - - 1 33 36.73 



+ 1 33 36.73 



