ON THE TERIODICITY OF THE AURORA BOREALIS. 



19 



Mairan, Pilgram, and Acad. Coll. 

 Short. 

 Short. 



Ingram. [Saxon Chronicle, p. 338.] 

 Palestine. Lycosthenes and Frobes. 1 

 Mairan, Acad. Coll. Chasles, Boguslawski. 

 Pilgram. 



Lycosthenes, Mairan, 2 and Boue. 

 Lycosthenes, Frytschius, Frobes. 

 Ingram. 

 Ingram. 

 Pilgram. 



Lycosthenes, Frobes, and Pilgram. 

 Chasles and Boguslawski. 

 Pilgram. 



Canterbury? Gervasius. 

 Pilgram. 

 Short. 

 Short. 

 Short. 



Baluzius, 4 Frobes, Mairan, Acad. 

 Pilgram, Pfaff, 5 Boguslawski. 

 Pilgram. 

 Frobes. 6 

 Pilgram. 



Lycosthenes, Crornerus, 7 Frobes. 

 Mairan, Acad. Coll. Boguslawski. 

 Frytschius and Frobes. 

 Lycosthenes, Frobes, and Mairan. 

 Acad. Coll. Chasles, Boguslawski. 

 Lycosthenes, Chasles, and Bogusl. 

 Florence? Frobes, Mairan, Acad. 

 Lycosthenes, Frobes, 9 and Pilgram. 

 Chasles and Boguslawski. 

 Franciscus, Frobes, Mairan, Acad. 

 Franciscus, Frobes, and Mairan. 

 19. Pilgram and Acad. Coll. 



1354. Mar. 9. Lycosthenes, Franciscus Frobes. 

 i Corapt. Rend. VII. 709. 



2 Mairan quotes this example from Lycosthenes, but it is 

 probably the same as the aurora of Dec. 26, 111". Traite &c, p. 

 192. 



3 Splendor magnus visus est in Cantuaria nocte media XIII. 

 Kal.Jan. Twysden's Decern. Scriptores. 1.1538. 



* Miscellan. Chronicon Crcmonense. Lib. II. 307. 



6 Wurtemberg Jahrbuch fur. Vaterland. Gescbichte. 1850. 1. 80. 



6 Mairan does not rank this among the auroras. 



7 De Rebus Gestis Polon. Lib. IX. This is the same aurora 

 as Boue' ascribes to Dec. 6. 



8 Franciscus. Der Wunderreiche TJeberzug unsrer Nieder- 

 Welt &c. 



9 See Traite de l'Aurore Boreale par Mairan, p. 183. 



1531. 



ft 



1532. 



1534. 



it 



1535. 



Mairan and Acad. Coll. 



Pilgram. 



Frytschius, Lycosthenes, and Frolics. 



Chasles and Boguslawski. 



Pilgram. 



Pilgram. 



Lenzburff, &c. Lycosthenes, Frobes. 1 

 Mairan, Acad. Coll. and Boguslawski. 



Mairan 2 and Pilgram. 



Mairan and Pilgram. 



Lucerne, Switz., Lycosthenes. 



Frobes, Mairan, and Acad. Coll. 



Lycosthenes, Frobes, Mairan, Acad. 



Saxony. Lycosthenes. 



Frobes, Mairan, and Acad. Coll. 



Crornerus and Frobes. 



Vienna and Erfurt. Lycosthenes. 4 

 Frobes, Mairan, Pilgram, Acad. Coll. Bogusl. 



Frobes, Mairan, and Acad. Coll. 5 



Boue. 



Westrich. Lycosthenes, Frobes. 



Mairan, Pilgram, 7 and Acad. Coll. 



Boue. 

 Ulyxihona. [Lisbon ?] Nihusius, Frobes. 

 Germany. Lycosthenes, Meurerus. 

 Frobes, Mairan, Acad. Coll. Boguslawski. 



Lisbon, Portugal. Lycosthenes. 

 Frobes and Boguslawski. 

 Innspruck. Lycosthenes, Frobes, 8 Pilgram. 

 June 12. Schleswig, Holstein. Lycosthenes. 

 Finceleus, Frobes, 9 Mairan, and Acad. Coll. 

 May 26. Lausitz. Lycosthenes, Frobes. 

 " 26. Mairan, Acad. Coll. Boguslawski. 

 x. Weimar. Lycosthenes, Nihusius, Frobes. 



1 On this phenomenon Frobes remarks : " Dubium equidem, 

 nisi fallor, propter ipsius narrationis conditioncm, videtur, de- 

 beantne pro Aurora Boreali, an pro Tanpestate quidam snnora et 

 fiilgurante haberi, quorum hie mentio sit, nocturna ca-li spec- 

 tacula." 



'- This date, probably in old style, is from the Chronique do 

 Louis XL, p. 12. 



8 This was not probably an aurora. 



4 Weidler. Commcntat. de Aurora Boreali, p. 64. 



6 Urstisius Annal. Bas. Lib. VII. C. 9. and Wagner. Historia 

 Nat. Helvetia; Curiosa., p. 363. 



6 Ejusmodi visa (acies in celo dimicantcs) scribit Melanca- 

 thon in Germania ab anno 1524 ad 1548 saepissime spectata. 

 Tylkowsky. PhyBica Curiosa. P. III., p. 176. 



7 In Pilgram and the Acad. Coll. the date is Oct. II. 



8 Fincelius. De Miraculis. Jonston. Thaumatographia 

 Natur. Class III. Cap. 12. 



9 Teubner. De Armorum Militumque Simulacris, &c. 



