104 



ADDITIONAL OBSERVATIONS OF THE 



Magnetic Dip at Utica, New York. Latitude 43° 7' N.; Longitude 5h. Im. W. 

 Place of observation a few rods north-east of the village. 



Date. 



Hour. 



Needle. 



No 



Readings. 





Dip. 



1839, Sept. 3d, 



H—^k, A. M. 



No. 1, 





40 



74= 



54'.0 



(< (( (t 





No. 1, poles reversed, 





40 





52.6 



(( (1 <i 





Mean of No. 1, 





80 





53.3 



H 6( ii 





No. 2, 





40 





59.5 



n a it 





No. 2, poles reversed, 





40 





62.6 



H <( t( 





Mean of No. 2, 





80 





61 .0 



a 4i u 





Mean of both needles, 





160 



74 



57.2 



Magnetic dip at Schenectady, New York. Latitude 42° 48' N.; Longitude 4h. 56wi. Tf\ 



Place of observation a few rods south of the village. 



Date. 



Hour. 



Needle. 



No 



Readings. 





Dip. 



1839, Sept. 3d, 



4i_6^, P. M. 



No. 1, 





40 



74' 



' 40'. 7 







No. 1, poles reversed, 





40 





40.9 







Mean of No. 1, 





80 





40.8 







No. 2, 





40 





24.6 







No. 2, poles reversed. 





40 





38.1 







Mean of No. 2, 





80 





31 .3 







Mean of both needles, 





160 



74 



36.1 



Magnetic Dip at Albany, New York. Latitude 42° 39' N.; Longitude 4Ji. 55m. W. 

 Place of observation a few rods north-west of the capitol. 



Date. 



Hour. 



Needle. 



No 



Readings. 





Dip. 



1839, Sept. 4th, 



11, A.M.— 1, P.M. 



No. 1, 





40 



74 



' 55'.6 







No. 1, poles reversed. 





40 





45.5 







Mean of No. 1, 





80 





50 .5 







No. 2, 





40 





53.7 







No. 2, poles reversed. 





40 





50.5 







Mean of No. 2, 





80 





52.1 







Mean of both needles, 





160 



74 



51 .3 



