244 



ON THE PERIODICITY OF THE AURORA BOREALIS. 



1571. 

 1572. 

 1574. 

 1575. 

 *1575. 

 1603. 



1604. 

 a 



1607. 

 *1621. 

 # u 



1637. 



tt 



1646. 



1658. 



1678. 



16S0. 

 *1704. 

 *1707. 



« 



u 



# 



* « 



*1708. 



Aug. 4. 

 Jan. 28. 



Oct. 8. 

 Feb. 7. 

 March 13. 

 Aug. 6. 

 Dec. 7. 

 " 19. 

 Feb. 23. 

 Feb. 3. 

 Sept. 12. 



Feb. 6. 



Oct. 13. 



Oct. 29. 



May 31. 



Dec. 28. 



Feb. 12. 



a jo. 

 March 17. 



« 17. 



" 18. 



" 20. 



Aug. .16. 



" 17? 



Oct. 27. 



Nov. 24. 



« 27. 



Aug. 20. 



London. 1 



Bohemia? Strnadt. 



Short. 



Yindemia. Maier, Frobes. 2 



Awrberg. Liithardt, Wolf. 8 



Bohemia ? Strnadt. 



Meyenfeld, Basler, Wolf. 



Zurich ? Vogel, Wolf. 



Meyenfeld ? Basler, Wolf. 



Bohemia? Strnadt. 



Zurich ? Vogel, Wolf. 



Mairan, Wolf. 4 



Zurich, &c. Basler, Wolf. 5 



Aix. Gassendus, Frobes. 



Occ it a n ia. Dub amel.* 



Mark. Beckmann. 



Mark. Beckmann. 



Murk. Beckmann. 



Kirch/ Wolf. 



Copenhagen. Happel. 8 



Copenhagen. Bomer, 9 Liebknecht. 



Wollfius, Weidler, Beuss. 



Sehomberg. Seidelius. 



Copenhagen. Bomer. 



Berlin. Kirch, Leibnitz. 10 



Tunica, Bothnia. Scheller. 



Breslau. Happel. 



Breslau. Ilappel. 



Tornea, Bothnia. Scheller. 11 



Tornea, Bothnia. Scheller. 



Beuss. 



Thompson and Filgram. 



'"—the Londoners were in the streets gazing at a huge arch in 

 the sky, which seemed to span the city, and filled their hearts 

 with terrors of approaching change." — Fronde's History of 

 England, X. 258. 



2 He quotes Marcellus Squarcialupus. 



3 Vierteljahrsschrift der Xaturforsch. Gesellsch. in Zurich, I. 

 197, V. 327. 



4 Wolf quotes Mairan, and Mairan quotes Kirch. Is this not 

 the Aurora of Marcli 3 ? Compare Mairan. 



5 Vierteljahrsschrift der Naturforsch. Gesellsch. in Zurich, 

 IV. 389. 



6 Opera Philos. Tom. I. Lib. de Meteoris L. I. Cap. IV. p. 

 327. 



" Wolf quotes Neue Himmelszeitung. 



s Denckwurdigkeiten der Welt. 



9 MisceUan. Berolin, 1. 131, 133, et 135. 

 ' 10 Comment. Hist. Acad. Reg. Scient. Paris, 1707. 



u Disput. de Chasmate sive Aurora Boreali, p. 18. 



i Acta Erudit. Lips. 1708, p. 526. 



2 Phil. Trans. XXVII. 322. It is doubtful whether this 

 was an aurora, though Thompson so regards it in his Meteor 

 ology. 



; Acta Erudit. Lips. 1711, p. 325. 



•Acta Phys. Med. Artific. Litt. Uratislav. 1717, I. 165. 



5 Acta Litt. Sueciae, I. 568. 



6 Celsius, Observ. de Lumine Boreali, p. 1. 



" Kurze Bescreibung der Xeuen Wunder-Erscheinung des 

 Xord-Lichts, &c. 



BActa Erudit Lips. 1716 pp. 357, 361, and 365. 



9 Xaturhistorie des Schweizerlandes. 



i°Me'm. de l'Acad. Paris, 1716, p. 122. 



11 Was not this a meteor ? 



^Syrmatum et Coruscationum Borealium in Horizonte 

 Gisseno observ. Pescriptio. 



