104 



ON THE PERIODICITY OF THE AURORA BOREALIS. 



Aug. 10. St. Petersburg. Wisniewsky. Kupffer. 1 



" 11. Hudson's Bay. Lyon. 2 Arago. 



Sept. 5. Hudson's Bay. Lyon. 



9. Edinburgh. Brewster. 8 



9. Howe's Welcome. Lyon. Arago. 



29. Hudson's Bay. Lyon. Arago. 



29. St. Petersburg. Wisniewsky. Kupffer. 



Nov. 1 6. Konigsburg. Sommer. 4 



17. Port Bowen. Parry. Arago. 



25. Port Bowen. Parry. Arago. 



26. Port Bowen. Parry. Arago. 



27. Port Bowen. Parry. Arago. 

 Dec. 1. Port Bowen. Parry. Arago. 



16. Port Bowen. Parry. Arago. 



20. Port Bowen. Parry. Arago. 



21. Port Bowen. Parry. 6 Arago. 



22. Port Bowen. Parry. Arago. 



23. Port Bowen. Parry. Arago. 



24. Port Bowen. Parry. Arago. 

 26. Port Bowen. Parry. Fisher. 8 



Jan. 7. 

 " 11. 



12. 



15. 



16. 



17. 



18. 



20. 



27. 

 " 28. 

 Feb. 11. 

 " 14. 

 " 15. 

 " 16. 

 " 17. 



Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 

 Port 



Bowen. 

 Bowen. 

 Bowen. 

 Bowen. 

 Bowen. 

 Bowen. 

 Bowen. 

 Boxcen. 

 Boxcen. 

 Boxcen. 

 Bowen. 

 Bowen. 

 Boxcen. 

 Boxcen. 

 Bowen. 



1825. 



Parry. 7 



Parry. 



Parry. 



Parry. 



Parry. 



Parry. 



Parry. 



Parry. 



Parry. 



Parry. 



Parry. 



Parry. 8 



Parry. 



Parry. 



Parry. 



Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 

 Arago. 



i Mem. de l'Acad. St. Petersb. IV. 



2 Off Winter Island, Lat. 66° N. Long. 83° W. Aug. 31, 1823. 

 It was remarkable that we should have seen the aurora so seldom 

 and faintly at Igloolik, and that now again we should, on return- 

 ing to Winter Island, find it as brilliant as we had been accus- 

 tomed to see it at the same place two years before. Lyon's Private 

 Journal, p. 455. 



8 Edin. Journ. Sci. 1825, p. 55. 



* Kastn. Archiv. V. 373. 



6 Journal of a Third Voyage, &c. p. 60. 



6 Phil. Trans. 1826. Pt. IV. p. 215. 



' Fifteen auroras were observed at Port Bowen in January ; 

 thirteen in February; nn&Jive in March. 



8 Phil. Trans. 1826. Pt. IV. p. 133. 



Feb. 19. 

 " 22. 

 " 23. 

 " 24. 

 Mar. 9. 

 " 12. 

 " 13. 

 " 14. 

 " 19. 

 " 19. 

 " 19. 

 Apr. 14. 

 " 25. 

 Aug. 10. 

 " 17. 

 " 17. 

 " 21. 

 " 22. 

 " 25. 

 " 26. 

 Sept.10. 

 " 10. 

 " 11. 

 " 11. 

 " 15. 

 " 20. 

 « 24. 

 Oct. 5. 

 " 7. 

 " 26. 

 " 27. 

 2. 

 3. 

 3. 

 3. 

 4. 

 4. 

 22. 

 22. 



Nov 



Leith. Coldstream. Quetelet. 1 



Port Boxcen. Parry. Arago. 



Port Boxcen. Party. Arago. 



Port Bowen. Parry. Arago. 



Port^Boxcen. Parry. Arago. 



Port Bowen. Parry. Arago. 



Port Bowen. Parry. Arago. 



Port Boxcen. Parry. Arago. 



G. Britain or Ireland. Dalton. Arago. 



Leith. Coldstream, &c. 2 Muncke. Quetelet. 



Edinburgh. Brewster. 8 



Boston. Hale. Lovering. 



Christiania. Hansteen. Hardanger. Herzberg 4 



Christiania. Halmboe. 



Leith. Coldstream. 5 



Muncke, Arago, and Quetelet. 



Christiania. Hansteen. 



Christiania. Hansteen. 



Christiania. Muncke. Quetelet. 



Christiania. Hansteen. Arago. 



Christiania. Hansteen. 



Leith. Muncke, Arago, Quetelet, and Boue. 



St. Petersburg. Wisniewsky. Kupffer. 



Leith. Coldstream. 



Davis's Strait. Parry. Arago. 



Davids Strait. Parry. Arago. 



At sea. Lat.58°N. Long. 44° W. Parry. Arago. 



At sea. Parry. 6 Arago. 



Paris. Arago. Muncke and Quetelet. 7 



Fort Franklin. Franklin. 8 



Fort FranMin. Franklin. 



Fort Franklin. Franklin. 



Norway. Hansteen. Muncke. 



Leith. Coldstream. 



Arago, Muncke, and Quetelet. 



Norway. Muncke, Arago, and Quetelet. 



Leith. Muncke. Bergen. Bohr. 9 



Leith. Coldstream. Alford. Farquharson. 10 



Arago, Muncke, and Quetelet. 



1 Ferussac. Bull. Univ. XI. 202. 



2 Edin. Journ. Sci. V. 190. 



8 Edin. Journ. Sci. III. 181. 

 * Annals of Phil. II. 335. 

 6 Edin. Journ. Sci. IX. 86. 



6 Parry says : " In running down Davis's Strait, as well as in 

 crossing the Atlantic, we saw on this passage as well as in all 

 former autumnal ones, a good deal of the Aurora Borealis." 



7 Ann. Chem. et Phys. XXX. 424. 



8 Narrative of a Second Expedition, p. 66. 

 » Annals of Phil. II. 335. 



1° Phil. Trans. 1829, p. 103. 



