AT SEVERAL PLACES IN THE UNITED STATES. gg 



Magnetic Dip at Bazetta, Ohio. Latitude 41° 20' N.; Longitude 80° 45' W. 

 Place of observation near the centre of the township. 



Date. 





Hour. 





Needle. 



No. 



Readings. 



Dip. 



1840, Sept, 



9th, 



lli- 



-1, 



P 



.M. 



No. 1, 





40 



72° 58'.4 















No. 1, poles reversed, 





40 



57.3 















Mean of No. 1, 





80 



57.9 















No. 2, 





40 



61.1 















No. 2, poles reversed, 





40 



61.8 















Mean of No. 2, 





80 



61.5 















Mean of both needles. 





160 



72 59.7 



Magnetic Dip at Kinsman, Ohio. Latitude 41° 30' N.; Longitude 80° 34' W. 

 Place of observation half a mile south-west of the centre of the township. 



Date. 







Hour. 



Needle. 



No, 



Readings. 





Dip. 



1840, Sept. 



10th, 



9— 



11, 



A.M. 



No. 1, 





40 



73' 



' 2'.0 













No. 1, poles reversed, 





40 





8.9 













Mean of No. 1, 





80 





5.5 













No. 2, 





40 





10.5 













No. 2, poles reversed. 





40 





11.1 













Mean of No. 2, 





80 





10.8 













Mean of both needles. 





160 



73 



8.1 



Magnetic Dip at Hartford, Ohio. Latitude 41° 19' iV.; Longitude 80° 34' W. 

 Place of observation one mile south of the centre of the township. 





Date. 





Hour. 



Needle. 



No. Readings. 





Dip. 



1840, 



Sept. 



10th, 



4-5i, 



P.M. 



No. 1, 



40 



72' 



' 55'.9 







(t 







No. 1, poles reversed, 



40 





51.4 







(( 







Mean of No. 1, 



80 





53.7 







n 







No. 2, 



40 





64.0 







<( 







No. 2, poles reversed, 



40 





68.0 







IC 







Mean of No. 2, 



80 





66.0 







(( 







Mean of both needles, 



160 



73 



59.8 



VIII. — s 



