98 



OX THE PERIODICITY OF THE AURORA BOREALIS. 



May 2S. Muncke. Quetelet 



Aug. 29. Milnegraden. Muncke. Quetelet. 1 



Sept. 15. Salem. Holyoke. Lovering. 



' ; 15. New Haven. Day. Loomis. 



21. Muncke. Quetelet. 



" 22. Muncke. Quetelet. 



" 24. New Haven. Day. Loomis. 



24. St. Petersburg. Inochodzow.'- Paris. Bouvard. 



" 24. G. Britain or Ireland. Dalton. 



Oct. 13. Muncke. Quetelet. 



'• 20. Muncke. Quetelet. 



" 22. Muncke. Quetelet. 



Nov.16. Muncke. Quetelet. 



" 18. Salem. Holyoke. Lovering. 



" 18. Muncke. Quetelet. 



" 19. ■ Muncke. Quetelet. 



" 20. Muncke. Quetelet. 



" 25. Muncke. Quetelet. 



" 26. Muncke. Quetelet. 



Dec. 26. Muncke. Quetelet. 



180G. 



Jan. 11. Neic Haven. Day. Loomis. 



Feb. 7. G. Britain or Ireland. Dalton. 



Mar. 1 6. New Haven. Day. Loomis. 



Apr. 13. Salem. Holyoke. Lovering. 



Aug. 9. St. Petersburg. Inochodzow. 



Sept. 10. G. Britain or Ireland. Dalton. 



Oct. 2. Eckwarden. Brandes. 8 



" 5. Salem. Holyoke. Lovering. 



Nov. 2. G. Britain or Ireland. Dalton. 



" 2. Eckwarden. Brandes. Muncke and Quetelet. 



Dec. 22. Halle. Gilbert. Muncke. 



" 22. Paris. Quetelet. 1 



1807. 



Jan. 13. Halle. Gilbert. Muncke and Quetelet. 5 



Mar. 26. Border of Norway and Sweden. Hausmann. 6 



"" 26. Muncke and Quetelet. 



Apr. 11. New Haven. Day. Loomis. 



" 15. Lat. 66° N. Long. 6° IF. Scoresby. 7 



May 8. New Haven. Day. Loomis. 



i Ferussac. Bull. Univ. EX. 



2 Mem. de l'Acad. St. Petersb. IV. 490. 



8 Gilbert. Ami. XXIV. 363. 



4 Gilbert. Ann. XXIV. 363. XXIX. 428. 



5 Gilbert. Ann. XXIV. 365. 



6 Reise Durch. Skandin. V. 259. 

 T Arctic Regions. I. 417. 



1808. 



Mar. 8. G. Britain or Ireland. Dalton. 

 July 23. St. Petersburg. Petrow. 1 

 " 31. Road from Leipsic to Halle. Gilbert. 2 



1809. 



Jan. 31. Salem. Holyoke. Lovering. 

 Mar. 19. Lat. 59° N. Long. 1° W. Scoresby. 

 June 13. Salem. Holyoke. Lovering. 



1810. 



Apr. 4. Lat. 71° JV. Long. 3° E. Scoresby. 



1811. 



Mar. 28. Lat. 67° N. Long. 2° E. Scoresby. 



" 29. Lat. 67° N. Long. 3° E. Scoresby. 



" 30. Lat. 68° N. Long. 4° E. Scoresby. 



" 31. Lat. 67° N. Long. 4° E. Scoresby. 



1814. 



Salem. Holyoke. Lovering. 



Tottenham. Howard. Muncke and Quetelet. 



G. Britain or Ireland. Dalton. 



Salem. Holyoke. Lovering. 



New Haven. Day. Loomis. 



( iitrinnati* Drake. 



G. Britain or Ireland. Dalton. 



Salem. Holyoke. Lovering. 



New Haven. Day. Loomis. 



( 'iiiiinnati. Drake. 



G. Britain or Ireland. Dalton. 



Glasgow. Dobbie. 7 



Berne. Studer. 8 



i Mem. de l'Acad. St. Petersb. VI. 682. 



2 Gilbert. Ann. XXX. 243. Doubtful whether this was an 

 aurora. 



8 Gilbert. Ann. LI. 72. 



* In Gilbert. Ann. LI. 72, an aurora is mentioned as occurring 

 on April 11th or 17th. 



6 Drake's Picture of Cincinnati pp. 245-6. 



The aurora was constantly observed at York Factory from 

 Aug. 31st to Sept. 28th. Smith. Contrib. VLH. Record of 

 Auroral Phenom. &c. Force, p. 9. Chappel remarks : " Dur- 

 ing our stay in Hudson's Bay from Aug. 31st to Sept. 28th, 1814, 

 and upon our voyage home from thence, our nights were constant- 

 ly illuminated by brilliant auroras." p. 136. 



7 Phil. Mag. LVI. 175. 



8 Mirth. Naturforsch. Gesellsch. Bern. 1855. p. 45. 



