66 



Fulton Station, derived from comparison by means of the two chrono- 

 meters, with the longitude of Chicago. 



We now proceed to give the observations at Fulton : — 

 Position of the Fulton Station. — From this station to the intersec- 

 tion of the middle of Base Street, with the middle of Cherry Street, is 

 N. 53° 24' 53" W. (true) and the distance is 302 feet. Hence the 

 reduction in latitude is + 1".71, and in longitude + 3".20 in arc, or 

 + 05.214 in time. 



1st. Observations for the Latitvde. 1858, March 2Ath. 



By 19 circum-meridian altitudes of Polaris (lower 



transit) north, combined with 26 circum-meridian ^ , 

 altitudes of c« Virginis, south, - - - 41 52 03.25 



Correction due to survey, connecting with the Lyons 



observino; station, .... — 1.92 



Latitude of station adopted, - - 41 52 01. 33 N. 



2d. Observations for the Time. 1st. 1858, March 2Ath. 



Mean solar chronometer was fast of mean solar time at apparent noon : 

 By 2 pairs of equal altitudes of the sun's lower limb, + 57«. 10.725. 



By comparison — Chronometer No. 2557, was fast of 



sidereal time for this station at apparent noon (say h. m. s. 

 at 0/t. 14m. sidereal time) - - + 1 00 13.75 



2d. 1858, March 2Sth. 

 Sidereal chronometer No. 2557, fast: 

 By 10 observations on « Tauri, west, and 9 observa- 

 tions on fi Tauri, also west (at 8/t. 407n.) + 1 00 31.93 

 By 24 observations on e Bootis, east (at 10/i. SOm.) + 1 00 31.87 



Result — Chronometer No. 2557, fast of sidereal time 



for this station (at 9/i. .35m. sidereal time) -f 1 00 31.90 



By comparison — Chronometer No. 141, was fast of 

 mean solar time for this station (at 9h. 10m. 

 mean time) - - - . -|- 5 07.94 



