Bache, Alexander Dallas. No. 4 in *#E.220a.20 Note of the effect upon the magnetic needle, of the aurora borealis, visible at Philadelphia, on the 17th of May, 1833. [Phile. 1833] 5 ppe 8% From the Journal of the Franklin institute, new series, vol. 12 [*4017.1.N. S. 12).
 
“Aurora Borealis; Compass.