292 



ON THE PERIODICITY OF THE AURORA BOREALIS. 



♦March 27. 



* " 28. 



* " 29. 

 April 8. 



* 

 * 



* 



May 



June 



July 



9. 



9. 



9. 



9. 



9. 



9. 



9. 

 10. 

 11. 

 11. 

 12. 

 13. 

 14. 

 14. 

 16. 

 16. 

 18. 

 18. 

 18. 

 19. 

 23. 

 26. 

 11. 

 12. 

 12. 

 14. 

 18. 

 23. 

 24. 

 27. 



9. 

 10. 

 30. 



1. 



2. 



4. 



8. 



11. 



11. 



12. 



12. 



16. 



Toronto. Kingston. Sweden. Heis. 1 



Brussels. Quetelet. Heis. 



Chrisliania. Fearnley. 



Christiania. Hansteen. 



Toronto. Kingston. 



Isle Jesus. Smallwood. 



Christiania. Fearnley. Crefcld. Heis. 



Skive, North Jutland, Munster. Heis. 



Wiedenbruck. Heising. Heis. 



Nottingham. Ballot. Galditz. Heis. 



Hamburg. Hamrn. Heis. 



Chrisliania. Fearnley. 



Toronto. Kingston. 



Christiania. Fearnley. 



Toronto. Kingston. 



Isle Jesus. Smallwood. Werdcn. Heis. 



Toronto. Kingston. 



Isle Jesus. Smallwood. 



Christiania. Fearnley. 



Nottingham. Ballot. Munster. Heis. 



Toronto. Kingston. 



Isle Jesus. Smallwood. 



Christiania. Fearnley. 



Christiania. Fearnley. 



Toronto. 



Toronto. 



Toronto. 



Toronto. 



Isle Jesus 



Toronto. 



Toronto. 



Toronto. 



Toronto. 



Toronto. 



Toronto. 



Toronto. 



I *July 



* « 



Kingston. 



Kingston. 



Kingston. 



Kingston. 

 Smallwood. 



Kingston. 



Kingston. 



Kingston. 



Kingston. 



Kingston. 



Kingston. 



Kingston. 

 Near Cape Chudleigh. 

 Near Cape Chudleigh. 

 Near Cape Chudleigh. 

 Near Cape Chudleigh. 

 Near Cape Chudleigh. 

 Toronto. Kingston. 

 Near Cape Chudleigh. 

 Toronto. Kingston. 

 Near Gape Chudleigh. 

 Near Cape Chudleigh. 



Venable.- 



Venable. 



Venable. 



Venable. 



Venable. 



Venable. 



Venable. 

 Venable. 



i Wochenschrift fiir Astrnnomie etc. Neue Folge, Jahrgang 

 IV. 98, &c. 



*In Labrador. See U. S. Coast Survey Reports, 1860, 

 pp. 258, 9. 



Aug. 



*Sept. 



17. Toronto. Kingston. 



17. Near Cape Chudleigh. Venable. 



18. Isle Jesus. Smallwood. 



19. Toronto. Kingston. 

 10. Isle Jesus. Smallwood. 

 21. Toronto. Kingston. 

 23. Isle Jesus. Smallwood. 



25. Near Cape Chudleigh. Venable. 



27. Toronto. Kingston. 



29. Near Cape Chudleigh. Venable. 



1. Near Cape Chudleigh. Venable. 



2. Near Cape Chudleigh. Venable. 



4. Isle Jesus. Smallwood. 



5. Isle Jesus. Smallwood. 



6. Toronto. Kingston. 



6. Near Cape Chudleigh. Venable. 

 8. Toronto. Kingston. 

 8. Isle Jesus. Smallwood. 



8. Prague, Dresden, Braunsherg. Heis. 



9. Toronto. Kingston. 



9. Isle Jesus. Smallwood. 

 9. Kremsmiinster. Ballot. Heis. 

 10. Toronto. Kingston. Dresden. Fischer. 



10. St. Petersburg, Einden. Ballot. Heis. 



11. Toronto. Kingston. 



11. Isle Jesus. Smallwood. 



12. Isle Jesus. Smallwood. 



12. Weenen, Kremsmiinster. Ballot. Heis. 



12. Orenbourg. Anitsehkoff. 



13. Toronto. Kingston. 

 13. Christiania. Fearnley. 



15. Christiania. Fearnley. 



16. Isle Jesus. Smallwood. 

 16. Stockholm. Ballot. 



16. Christiania. Fearnley. 



18. Toronto. Kingston. Stockholm. Ballot. 



18. Isle Jesus. Smallwood. 



19. Chrisliania Fearnley. 



21. Isle Jesus. Smallwood. 



22. Toronto. Kingston. 

 22. Isle Jesus. Smallwood. 



6. Toronto. Kingston. 

 6. Isle Jesus. Smallwood. 



6. Christiania. Fearnley. 



7. Chris/ in nia. Fearnley. 



8. Toronto. Kingston. 



8. Christiania. Fearnley. 

 10. Toronto. Kingston. 

 10. Isle Jesus. Smallwood. 

 10. Christiania. Fearnley 



