11G 



ON THE PERIODICITY OF THE AURORA BOREALIS. 



Nov. 3. Fort Reliance. Back and King. 



" 5. New Haven. Loomis. 



" 6. New Haven. Loomis. 



" 6. Fort Reliance. Back and King. 



" 7. Fort Reliance. Back and King. 



" 10. Fort Reliance. Back and King. 



" 11. Fort Reliance. Back and King. 



" 1 2. Fort Reliance. Back and King. 



" 13. Fort Reliance. Back and King. 



" 19. Fort Reliance. Back and King. 



" 19. Nova Zentbla. Pakhtoussoff. Kupffer. 1 



" 20. Fort Reliance. Back and King. 



" 20. Nova Zembla. Pakhtoussoff. Kupffer. 



" 21. Fort Reliance. Back and King. 



" 22. Nova Zembla. Pakhtoussoff. Kupffer. 



" 23. Fort Reliance. Back and King. 



" 23. Nova Zembla. Pakhtoussoff. Kupffer. 



" 25. Fort Reliance. Back and King. 



" 25. Nova Zembla. Pakhtoussoff. Kupffer. 



" 27. Fort Reliance. Back and King. 



" 28. New Haven. Loomis. 



" 28. Fort Reliance. Back and King. 



" 29. Nova Zembla. Pakhtoussoff. Kupffer. 



" 30. Nova Zembla. Pakhtoussoff. Kupffer. 



Dec. 1. Fort Reliance. Back and King. 



" 2. Fort Reliance. Back and King. 



" 2. Nova Zembla. Pakhtoussoff. Kupffer. 



" 3. New York. Hough. 



" 3. Fort Reliance. Back and King. 



" 4. New York. Hough. New Haven. Loomis. 



" 4. Fort Reliance. Back and King. 



" 5. Fort Reliance. Back and King. 



" 6. New Haven. Loomis. 



" 6. Nova Zembla. Pakhtoussoff. Kupffer. 



" 6. Fort Reliance. Back and King. 



" 7. Fort Reliance. Back and King. 



" 8. Fort Reliance. Back and King. 



" 9. Fort Reliance. Back and King. 



" 9. Nora Zembla. Pakhtoussoff. Kupffer. 



" 10. Fort Reliance. Back and King. 



. " 12. Fort Reliance. Back and King. 



" 14. Fort Reliance. Back and King. 



" 15. Fort Reliance. Back and King. 



" 16. Fort Reliance. Back and King. 



" 18. Fort Reliance. Back and King. 



" 19. Fort Reliance. Back and King. 



" 20. New York. Hough. 



" 20. Fort Reliance. Back and King. 



" 21. Neiv York. Hough. New Haven. Loomis. 



i Aniiuaire Magnet, et Meter, de Russie. 



Dec. 21. 

 " 22. 

 " 22. 

 " 22. 

 " 23. 

 " 23. 

 " 24. 

 " 25. 

 " 2G. 

 ; 27. 

 28. 

 29. 

 ; 30. 

 : 31. 



Jan. 1. 



2. 

 " 3. 

 « 4. 

 " 4. 

 " 5. 



6. 

 " 10. 

 " 14. 

 " 15. 

 " 16. 

 " 18. 

 " 18. 

 " 23. 

 " 24. 

 » 24. 

 " 25. 

 " 26. 

 " 27. 

 " 28. 

 " 29. 

 " 29. 

 " 29. 

 " 29. 

 " 30. 

 " 31. 

 " 31. 

 Feb. 1. 

 « 1. 

 " 2. 



2. 

 " 3. 



1835. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



New York. Hough. 



Fort Reliance. Back and King. 



New York. Hough. 



Fort Reliance. Back and King. 



Fort Reliance. 

 Fort Reliance. 

 Fort Reliance. 

 Fort Reliance. 



Back and King. 

 Back and King. 

 Back and King. 

 Back and King. 



New York. Hough. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



Nova Zembla. Pakhtoussoff. Kupffer. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



New York. Hough. 



New Haven. Loomis. Providence. Caswell. 



Hanover, New Hampshire. Hough. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



New York. Hough. 



Fort Reliance. Back and King. 



Fort Reliance. Back and King. 



Nova Zembla. Pakhtoussoff. Kupffer. 



Fort Reliance. Back and King. 



Nova Zembla. Pakhtoussoff. Kupffer. 



Fort Reliance. Back and King. 



l Phil. Mag. VI. Third Series, 230. 



