36 



ON THE PERIODICITY OF THE AURORA BOREALIS. 



Nov. 3. 



" 4. 

 4. 



" 5. 



" 5. 



" 5. 



" 6. 



« 7. 



" 7. 

 8. 



" 9. 



" 10. 



" 12. 



" 14. 



" 17. 

 18. 



" 19. 



" 21. 



" 22. 



" 25. 



« 28. 



« 30. 



" [ x. 

 Dec. 2. 



" 8. 



" 9. 



" 14. 1 



" 14. 



« 17. 



" 23. 



« 25. 



" 26. 



" 28. 



Jan. 



2. 



" 2. 



" 2. 



" 10. 



" 26. 

 Feb. 4. 



« 10. 



" 10. 



" 28. 

 Mar. 1. 



" 2. 



" 2. 



« 2. 



Siceden. Celsius. Frobes and Filgram. 



Sweden. Celsius. Frobes and Mairan. 



Abo. Sporing. Pilgram. 



St. Petersburg. Kraft. The Delisles. 



Berlin. Kirch. Phil. Trans. 



Sweden. Celsius. Frobes and Mairan. 



Phil. Trans, and Mairan. 



St. Petersburg. Kraft. 



The Delisles. Frobes and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



St. Petersburg. Kraft. The Delisles. Mairan, 



Celsius, Frobes, and Mairan. 



Abo. Sporing. Celsius, Frobes, and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Frobes and Mairan. 



Abo. Sporing. Celsius, Frobes, and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Boue quotes from Celsius. 



Frobes and Mairan. 



Sweden. Celsius. Frobes, and Mairan. 



Italy. Beceari. Mairan. 



Abo. Sporing. Celsius, Frobes, and Mairan. 



Frobes and Mairan. 



Abo. Sporing. Frobes and Mairan. 



St. Petersburg. Kraft. The Delisles. 



Celsius and Mairan. 



Abo. Sporing. Celsius, Frobes, and Mairan. 



Frobes and Mairan. 



Abo. Sporing. Celsius, Frobes, and Mairan ? 



Frobes and Mairan. 



Frobes and Mairan. 



1731. 



St. Petersburg. Kraft. The Delisles. 



Berlin. Kirch. Mairan. 



Siceden. Celsius. Frobes. 



St. Petersburg. Kraft. The Delisles. Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Sweden. Celsius. 2 Frobes and Mairan. 



Bologna. Zanotti and Beceari. 



Sweden. Celsius. Frobes and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



St. Petersburg. Kraft. The Delisles. Mairan. 



Plymouth. Huxham. Short. 



St. Petersburg. Kraft. The Delisles. 



Siceden. Celsius. Frobes and Mairan. 



1 Or 4. See Traite, &c, par Mairan, p. 495. 



2 Acta Lit. SuecijE, III. B. 44. 



Sweden. Celsius. Frobes and Mairan. 



St. Petersburg. Kraft. The Delisles. Mairan. 



Sweden. Celsius. Frobes and Phil. Trans. 



St. Petersburg. The Delisles. Mairan. 



St. Petersburg "? Kraft. 



Sweden. Celsius. Frobes and Mairan. 



St. Petersburg. Kraft. The Delisles. Mairan. 



Sweden. Celsius. Frobes and Phil. Trans. 



St. Petersburg. Kraft. The Delisles. Mairan. 



Boue\ 



Mairan and Short. 



Plymouth. Huxham. 



Phil. Trans, and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Siceden. Celsius. Frobes and Mairan. 



Plymouth. Huxham. Short. 



Sweden. Celsius. Frobes and Mairan. 



Wittemberg. Weidler. Mairan. 



St. Petersburg. Kraft. The Delisles. Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Sweden. Celsius. Frobes and Mairan. 



Wittemberg. "Weidler. 



Sweden. Celsius. Frobes and Mairan. 

 Plymouth. Huxham. 



Siceden. Celsius. Frobes and Mairan. 

 Plymouth. Huxham. Short and Mairan. 



St. Petersburg. Kraft. The Delisles. 

 Berlin. Kirch. Mairan. 

 Sweden. Celsius. Frobes and Pilgram. 

 Paris? Mairan. Celsius and Pilgram. 



Wittemberg. Weidler. 

 Paris f Mairan. Pilgram. 

 Paris ? Mairan. Pilgram. 

 Paris ? Mairan. Pilgram. 

 Siceden. Celsius. Frobes. 

 Phil. Trans, and Mairan. 

 Phil. Trans, and Mairan. 

 St. Petersburg. Kraft. The Delisles. 



Wittemberg. Weidler. Mairan. 

 Philadelphia. Breintnal. Kahn and Pilgram. 

 St. Petersburg. Kraft. The Delisles. 

 Berlin. Kirch. Pilgram and Phil. Trans. 

 Sweden. Celsius. Frobes and Mairan. 

 St. Petersburg. Kraft. The Delisles. 

 Berlin. Kirch. Wittemberg. Weidler. 

 Sweden. Celsius. Frobes and Mairan. 

 Pilgram and Phil. Trans. 

 Pilgram. 



St. Petersburg. Kraft. The Delisles. 

 Berlin. Kirch. Wittemberg. Weidler. 



