14 



M A (i N E T I C SU R V B Y F P E N N S Y L V A N I A . 



Bath, N. Y. — Observations for latitude in field S. \Y. from eourt-housc. Aug. 19, place to W 

 n!' former, and about 130 feet from it. 



Dale. 



Time. 



Aug. 19 



Needlc- 



Cvliuder 

 Bar 



Temp. Fahr. 



80°. 5 



80.5 



No of 

 vibrations. 



380 

 350 



Til f 



10 vibrations. 



36'. 969 

 39.410 



Corr'd. 



36". 931 



39.315 



intensity 

 Pliil. I 0000. 



0.8865 

 0.8788 



Mean 



0.8826 



Needle. 



Dip. 



A in:. 19 10" A. M. 



No. 1 

 No. 3 



74° 24'. 9 

 74 15.6 



Temp. Fanr. Dip when loaded. 



79°. 



79.5 



13° lO'.l 

 15 34.7 



Dip reduced. 

 t 



74° 25'. 6 

 14 25.3 



Relative total 

 intensity. 



1.1105 

 1.1256 



Mean 



74 25.5 



1.1181 



Aug. 23 



Time. 



Temp. Falir. 



No. oi aerie 



Cylinder 

 Bar 



67 -7 

 62.2 



No. nf 



vibrations. 



Time of 



10 vibrations. 



402 

 460 



36".545 

 38.664 



Corr'd. 



Horizontal 



intensity 



36 s . 530 

 38.654 



0.9064 

 0.9092 



Mean 



0.9078 



