•24 



M A Q X E 'J' I C S D It V E Y O P P E N X S Y L Y A N I A . 



Girard College, Philadelphia. — Continued. 





Dip. 



Temp. Fahr. Dip wbeu loaded. Dip reduced. Eelative total 

 , B A intensity. 



Si lit. 12 



1" P. M. 

 •2 " 



No. 1 

 No 3 



71°57'.l C2°7. 

 71 48.4 I 62 6 



21° 34'. 



71° 58'. 7 

 71 58.4 



Corr'u. 



1.20C9 

 —0.0141 



Mean of both needles 



71 58.6 



L.1928 



See Vol. II. of Girard College Magnetic and Meteorological Observations, pp. l."i44-4.">. 



