M A Q N E T I (' sr i; v E V OF P E N N S Y L V A \ I A 



Curwinsville.— Anir. 1, 1841. Lat. 40 57 '.7; long. 7- 85 

 A bs tract of Declination < Observations. 



N. end 



69.2 W. 



1 04.6 W. 

 56.2 W. 

 57.5 W 



+ 59. I 



S. ond. 



51.2 W. 



54.0 W 



46.5 \V. 



17.1 W 



—0 49.1 



+ () 04.8 



Azimuth circle reads, 



= + 0° 01'.2 

 207 56.0 



Magnetic meridian reads, 207 57.2 

 Abstract of Observations on Arcturus for time. 



Chron. time 

 Observed double alt. 

 True alt. 



( lomputed mean time 

 Chron. fast 



Abstract of Observations for Latitude. 



Chron. time 

 Observed double alt. . 

 True altitude . 

 Mean time 



Corresponding sid. time 

 R. A. of star . 

 Hour angle 

 Latitude 



Mean 



Abstract of Observation 



Mean of times 



Mean circle reading . 



Aug. 1, mean time of observation 



Corresponding sid. time 



R. A . of Polaris 



Hour anjrle 



Azimuth of Polaris 



Reading of Polaris 



" ast. meridian 



" magnetic meridian 



Magnetic Declination W 



Jupiter. 



8 h 35" 39' 



54° 25' 25" 



27 10 46 



8" 21 m 15 3 



17 03 10 



16 33 58 



29 12 



40° 57' 26" 



'.I 1 ' :)4 m 20 s 

 73° 1 1' 22" 

 36 35 50 

 •I' 1 1!!"' 56" 

 o 1 4 -J l 



Polaria. 



9 h 57'" 39 s 

 81° 26' 31" 



40 42 04 



9" 43 m 30M 

 18 25 39 



1 02 4C. 4 

 17 22 52.6 

 40° 58' 00" 



40° 57' 43" 



for A 



until 



f Polar 



8 h 43 m 19 s . 5 

 211° 29' 05" 



s" 28'" 55'. 5 

 17 10 52 



1 02 46 

 10 OS 00 



1° 46.8 



211 l".i I 



L'(i!i 4->:> 



207 51 'J 



1 45 1 



33 



