290 



ON THE PERIODICITY OF THE AURORA BOREALIP. 



April 9. 



* " 12. 

 « 14. 

 " 21. 

 « 21. 

 « 21. 

 " 21 

 " 21. 

 " 21. 

 " 22. 

 " 22. 

 " 23. 

 " 23. 



* " 24. 

 " 25. 



* " 28. 



* ' ; 29. 



* " 29. 

 May 1. 



" 2. 



" 5. 



" 10. 



" 19. 



" 20. 



" 22. 



" 24. 

 June S. 



" 15. 



" 25. 

 July 11. 



" 11. 



" 15. 



" 23. 



* " 28. 

 " 29. 

 " 29. 



Aug. 19. 

 " 19. 



* " 21. 

 " 23. 



* " 28. 



* " 28. 

 28. 

 28. 

 28. 

 28. 

 28. 



Isle Jesus. Small wood. 



Toronto. Kingston. 



Christiania. Fearnley. 



Toronto. Kingston. Isle Jesus. Smallwood. 



Strehla, Kremsmunster. lleis. 



Christiania. Fearnley. 



England. Glaisher. 



Munich. Lamont. Ballot. 



Prague, Leipsic. Heis. 



Christiania. Fearnley. Munster. lleis. 



England. Glaisher. 



Toronto. Kingston. 



Christiania, Fearnley. Munster. Heis. 



( 'hristiania. Fearnley. 



Christiania. Fearnley. 



Toronto. Kingston. England. Glaisher. 



Toronto. Kingston. Isle Jesus. Smallwood. 



Kremsmunster. lleis. Ballot. 



England. Glaisher. 



Isle Jesus. Smallwood. 



England. Glaisher. 



Toronto. Kingston. 



Isle Jesus. Smallwood. 



Toronto. Kingston. 



Kingston. 

 -Ion. 



Kingston. 



Kingston. 



Kingston. 



Kingston. 

 Smallwood. 



Toronto. 



Toronto. 

 Toronto. 

 Toronto. 

 Toronto 

 Toronto. 

 Isle Jesas. 



lleis. 



Wemlinghoven, Rheinprovina . 



Toronto. Kingston. 



Toronto. Kingston. 



Toronto. Kingston. 



Isle Jesus. Smallwood. 



Toronto. Kingston. 



Isle Jesus. Smallwood. 



Toronto. Kingston. 



Isle Jesus. Smallwood. 



Toronto. Kingston. Isle Jesus. Smallwood. 



At Sea, Lat. 30°. Long. 45°. Fitz Roy. 1 



At Sea, Lat. 26°. Long. 46°. 



At Sea, Lat. 51°. Long. 10°. 



Australia. Glaisher. 



Christian ia. Fearnley. 



Rafz. Heer. Holland. 1 



Fitz Roy. 

 Fitz Hoy. 



1 Amer. Journ. Sci. New Series, XXXII and 78. 



2 Vierteljahrsschrift der Naturforsch. Gesellseh. in Zurich, II. 

 '297,301,340,385. III. 127. IV. 390. 



*Sept. 



*Aug. 28. Belgium, France, Italy. Heis. 



* " 28. Leipsic, Munich. Ballot. Heis. 



* " 29. Isle Jesus. Smallwood. 



* " 29. Toronto. Kingston. Home, Prague. Heis. 



* " 29. Australia. Glaisher. 



* " 29. Brussels. Ballot. Heis. 



* " 30. Grantham, Engl. Vischel f Heis. 

 " 31. Grrantham, Engl. Vischel. Heis. 



1. Toronto. Kingston. Grantham. Heis. 

 " 1. Cracow. Ballot. Christiania. Ilansteen. 



2. Toronto. Kingston. Isle Jesus. Smallwood. 

 " 2. Christiania. Fearnley. 

 " 2. Clifton, Durham, Kremsmunster. Heis. 1 

 " 2. Cracow. Ballot, lleis. 

 ■ : 2. At Sea, Lat. 34°. Long. 44°. Fitz Roy. 

 " 2. At Sea, Lat. 34°. Long. 33°. Fitz Roy. 

 " 2. At Sea, Lat. 24°. Long. 36°. Fitz Roy. 

 " 3. Toronto. Kingston. 

 " 3. Christiania. Fearnley. 

 " 3. Hamburg, Kremsmunster. Heis. 

 " 3. Clifton, Durham, Engl. Heis. 

 " 3. Cracow, Dor/xrt, Stork-holm. Ballot. 

 " 1. Toronto. Kingston. Christiania. Fearnley. 

 " 4. Clifton, Tottenham, Grantham, Durham. 

 " 4. Gottenburg, Neumark. Heis. 

 " 5. Toronto. King-ton. Christiania. Fearnley. 

 " 5. St. Petersburg, Hanem. Heis. 

 " 6. Christiania. Fearnley. Stockholm. Heis. 

 " 6. Hamburg, Munster, Naugard. Heis. 

 ■' 14. Toronto. Kingston. Isle Jesus. Smallwood. 

 " 18. Isle Jesus. Smallwood. 

 " 20. Isle Jesus. Smallwood. 

 " 24. England, Holland. Heis. 



24. Cologne, Hamburg, Clement. Heis. 



" 24. Kremsmunster. Ballot. 



•' 24. Hiilsber Crefeld. Becket Heis. 



■ 25. Elherfeld. Heis. 



" 26. Christiania. Fearnley. 



" 27. Toronto. Kingston. 



" 27. Christiania. Fearnley. Hamburg, denied. 



" 2S. Toronto. Kingston. 



" 29. Isle Jesus. Smallwood. 



1. Dorpat. Ballot. Munich. Lamont. 

 1. daesdonck, Hamburg. Heis. 



* " 1. Christiania. Fearnley. Paris. Goldsmith. 



* '' 1. Kremsmunster. Reslhuber. Coesfeld. Heis. 



* " 1. Naugard. Winkler. Frier. Hois. 



* " 1. Lymington, Hants. Campbell. Heis. 



1 Wocheuschril't fur Astronoiuie etc., Neue Folge, Jalirgang 

 HI. 16 &c. 



*Oct. 

 * a 



