M A G N E T 1 C S U R V E V OK I' E N .\ S V 1, V A MA. 



11 



Berlin Tavern, Pa. — Near road from Clarion to Franklin; 19 miles from Franklin by 



account. 



Place of observation in woods to E. of N. of house, about 150 yards from turnpike, under 

 dwarf oaks. 



Mercer, Pa. — Forrest Inn, T 3 B of a mile from Mercer court-house, in centre of 

 Farthest cupola to W. reads . . 238° 38' 



Next of brick (more ornamented) . . 22!) 48 



N. E. corner of tavern .... 241 25 



barn . . . .279 12 76 paces. 



field. 



Needle. 



Temp. Fahr. 



No. .il" 

 vibrations. 



Time ,,f 



M vibrations. 



Corr'd. 



Horizontal 



intensity 

 Pliil. I ("liici 



Aug. 5 



Cylinder 

 Bar 



7 0".. ; > 

 7'.l. 5 



350 

 370 



35".535 

 37.657 



35 s . 4 99 

 37.571 



0.9586 



0.9618 



Mean 



0.9602 



Aug. 5 



Needle. 



Dip. 



Temp. Fahr. 



9 h A. M. 



9i " 



No. 1 

 No. 3 



72° 54'. 6 

 72 50.9 



Dip when loaded. Dip reduced. Relative t<«l nl 



& S Intensity. 



15° 11 '.3 

 17 33.8 



72° 55'.3 < 1.1413 

 73 00.6 j 1.1576 



Mean 



72 58.0 1.1494 



Cloudy, showery, wind S. H., light. 



