OX THE PERIODICITY OF THE AURORA BOREALIS. 



109 



Oct. 11. Aberdeenshire. Muncke and Quetelet. 



11. Alford. Farquharson. 



15. Perth} 



17. G. Britain or Ireland. Dalton. 



17. Muncke, Arago, and Quetelet. 



18. Felix Harbor. Ross. 2 

 21. New York. Hough. 

 21. Felix Harbor. Ross. Arago. 



24. New York. Hough. Arago. 



25. G. Britain or Ireland. Dalton. 

 25. Alford. Farquharson. 

 25. Muncke, Arago, and Quetelet. 

 27. Neic York. Hough. Arago. 



29. Perth* 



30. Arago ? 



31. Felix Harbor. Ross. 

 Nov. 1. Felix Harbor. Ross. 



9. New York. Hough. Arago. 



17. G. Britain or Ireland. Dalton. 



17. Alford. Farquharson. 



17. Muncke, Arago, and Quetelet. 



18. G. Britain or Ireland. Dalton. 

 18. Alford. Farquharson. 



18. Muncke, Arago, and Quetelet. 



19. New York. Hough. 

 19. G. Britain or Ii eland. Dalton. 

 19. Alford. Farquharson. 

 19. Muncke, Arago, and Quetelet. 

 21. Felix Harbor. Ross. 

 2-1. Felix Harbor. Ross. 

 25. Felix Harbor. Ross. 



Dec. 2. Felix Harbor. Ross. 



9. Felix Harbor. Ross. 



14. G. Britain or Ireland. 



14. Alford. Farquharson. 4 



14. Muncke, Arago, and Quetelet 



18. Felix Harbor. Ross. 



19. New York. Hough. 

 19. New Haven. Herrick. 

 19. Felix Harbor. Ross. 

 19. Tullynessle. Paull. 

 19. Alford. Farquharson. 



19. G. Britain or Ireland. 



20. New Haven. Herrick. 

 20. G. Britain or Ireland. 



Dalton. 

 Gosport. 



Wilmington. 



Loomis. 

 Arago. 



Burney. 



Gihhon. 



Dalton. Dove. 6 

 Loomis. 

 Dalton. 



1 Edin. Journ. Sci. X. 117. 



2 Narrative of a Second Voyage, &c. p. 204. 



3 Edin. Journ. X. 117. 



4 Phil. Trans. 1330, p. 99. Phil. Mag. VII. 



Jan. 6. 



" 24. 



" 25. 



" 25. 



" 25. 



" 27. 



" 28. 



" 28. 



" 28. 

 Feb. 16. 



" 18. 



" 19. 



" 19. 



" 23. 



" 24. 

 Mar. 15. 



" 16. 



" 18. 



" 18. 



" 18. 



" 24. 



" 24. 



" 28. 



" 31. 

 Apr. 15. 



" 19. 



" 19. 



" 19. 



" 19. 



" 20. 



" 21. 



" 24. 



" 25. 



" 28. 

 May 2. 



" 4. 



Felix Harbor. Ross. 

 Alford. Farquharson. 1 

 Muncke, Arago, and Quetelet. 

 Felix Harbor. Ross. 

 Felix Harbor. Ross. 

 New York. Hough. Arago. 

 Felix Harbor. Ross. 



1830. 



Felix Harbor. Ross. 



New York. Hough. 



G. Britain or Ireland. Dalton. 



Alford. Farquharson. 



Muncke, Arago, and Quetelet. 



New York. Hough. 



G. Britain or Ireland. Dalton. 



Alford. Farquharson. 



Muncke and Quetelet. 



New York. Hough. 



New York. Hough. 



New York. Hough. Kendal. Marshall. 



Arago, Muncke, and Quetelet. 



New York. Hough. 



St. Petersburg. Wisniewsky. Kupffer. 2 



New York. Hough. 



New York. Hough. 



G. Britain or Ireland. Dalton. 



St. Petersburg. Wisniewsky. Kupffer. 



Arago, Muncke, and Quetelet. 



G. Britain or Ireland. Dalton. Arago. 



Alford. Farquharson. 



New York. Hough. 



New York. Hough. 



Sharon. Smith. Loomis. 



New York. Hough. 



G. Britain or Ireland. Dalton. 



Gosport. Burney. Bedford. White. 8 



Arago, Muncke, and Quetelet. 



New York. Hough. 



New York. Hough. 



G. Britain or Ireland. Dalton. Arago. 



New York. Hough. 



New York. Hough. 



New York. Hough. 



New York. Hough. 



i Phil. Trans. 1830, p. 104. 



2 Mom. de l'Acad. St. Petcrsb. N. S. II. et IV. 



8 Phil. Mag. VII. 464. 



