20 



ON THE PERIODICITY OF THE AURORA BOREALIS. 



1536. Feb. 16. Spain. Fincelius, Lycosthenes. 

 « « 16. F robes, Mairan, and Acad. Coll. 



1537. Feb. 10. Italy. Fincelius, Lycosthenes, &c. 

 '" " 10. Frobes, Mairan and Acad. Coll. 



1538. Germany. Lycosthenes, Frobes, 1 Pilgram. 

 1541. Jan. 3. Germany. Lycosthenes, &c. 



" " 3. Frobes, Mairan. and Acad. Coll. 



1.342. Wartemberg. Lycosthenes, WollBus. 



" Frobes and Boguslawski.' 2 



1543. May 13. Pfortzheim. Lycosthenes, Frobes. 



" " 13. Mairan, Acad. Coll, Boguslawski. 3 



1545. Feb. x. Saxony. Lycosthenes, Boguslawski. 

 " April 7. Poland. Lycosthenes, Franciscus, &c. 

 " " 7. Frobes, Mairan, and Acad. Coll. 



1546. Feb. 19. Meissen. Lycosthenes, Frobes. 

 " " 19. Mairan, Acad. Coll. Boguslawski. 

 " Hungary. Fincelius, Franciscus, Liebknecht. 



1547. July 31. Helvetia. Lycosthenes, Fincelius. 

 « " 31. Frobes, Mairan, and Acad. Coll. 



" Oct. 10. Saxony. Lycosthenes, Fincelius. 



" " 10. Frobes, Mairan, and Acad. Coll. 



1548. Nov. 15. Saxony. Decimator, 4 Milichius. 5 

 " " 15. Frobes, Mairan, and Acad. Coll. 



1549. April. Padua. Toaldo. 6 



" Sept. 30. Kirch, Mairan, and Acad. Coll. 



1551. Feb. 6. Lisbon, Lycosthenes, Frobes. 



" " 6. Mairan. Acad. Coll. Boguslawski. 



" Sept. 11. Kirch, Mairan, and Acad. Coll. 



" Oct. 1. Wittemberg. Eberus, 7 Schmidt. 



" Frobes, Fincelius, Mairan, and Acad. Coll. 



1554. Feb. 10. Clialons. Lycosthenes, Frytschius. 

 " " 10. Frobes, Mairan, and Acad. Coll. 



" Aug. 2. Bohemia. Frytschius, Lycosthenes. 



" " 2. Mairan, Pilgram, and Boguslawski. 



" Aug. 14. Stolpen. Lycosthenes, Fincelius, B. 



" Aug. 21. Kirch, Mairan, and Acad. Coll. 



1555. Mar. 22. Tlmringen. Lycosthenes, Frobes. 

 " " 22. Mairan, Acad. Coll. Boguslawski. 

 " Sept. 2. Kirch, Mairan, and Acad. Coll. 



1556. Jan. 20. Bavaria. Lycosthenes, Frobes. 

 " " 20. Mairan. Acad. Coll. Boguslawski. 

 " Sept. 14. Ciislrin. Fincelius and Lycosth. 

 " " 14. Mairan, Pilgram. Acad. Coll. B. 



1 Maiolus. Dierum Canicularium, Colloq., 1.32. 



2 Cardan. De Da:mon. 



8 Schmidt. In Chron. Cygn., II. 337. Lehmann. In Chron. 

 Misu., p. 399. 



4 Epit. Meteor., p. 27. 



6 Comraentar. in Plinium. p. 209. 



6 Rozier. Journ. de Ph\-s., &c, XXIV. 7-8. 



' Calendario Histor., &c. Multi crederent ardere vicinum 

 pagum Teucheln. 



1557. Mar. 26. Voiglland. Lehmann. 



" ' " 26. Frobes, Mairan, and Acad. Coll. 



'• Dec. 4. Italy. Franciscus. 



" " 4. Frobes, Mairan, and Acad. Coll. 



1560. Feb. 11. London. Halley, 1 Pilgram. 



" Bohemia and Saxony. Thompson, 2 Boguslawski. 



" April 19. Kirch, Mairan, and Acad. Coll. 



1561. Jan. 6. Switzerland. Maraldi, 3 Pilgram. 



" Germany. Acronius, Wagner, Frobes, 4 A. Coll. 



" Jan. 6. 6 Kirch, Mairan, and Acad. Coll. 



" " 7. Zurich, Switzerland. Wolf. 



" Mar. 8. Msleben. Frobes, Mairan, A. Coll. 



" " 13. Kirch, Mairan, and Acad. Coll. 



1562. Germany. Frytschius, Frobes. 7 



1563. Jan. 23. Zurich. Wolf. 

 " Feb. 4. Zurich, Wolf. 



1564. Feb. 27. Gemma. 8 Kirch, Mairan, Pilgram. 

 " Sept. 9. Kirch, Mairan, ami Acad. Coll. 



" Oct. 16. England. Camden, Stow, 9 Thomp. 



" " 16. Gemma, Frobes, Mairan, Acad. Coll. 



" Nov. 6. Kirch, Mairan, and Acad. Coll. 



" " 7. Zurich. Wolf. 



1565. Dec. 5. Olai, 10 Celsius, 11 Mairan, Acad. Coll. 

 " " 5. Germany. Gareaeus, 1 ' 2 Frobes. 



1567. Feb. 16. Kirch, Mairan, and Acad. Coll. 

 " April 26. Kirch, Mairan, and Acad. Coll. 



1568. April 4. Franconia. Lausitz. Rivander. 

 " " 4. Frobes, Mairan, and Acad. Coll. 



" April 11. Franconia. Lausitz. Rivander. 



" " 11. Frobes, Mairan, and Acad. Coll. 



" Oct. 4. Gemma, Mairan, and Pilgram. 



1569. Jan. 4. Franconia. Lausitz. Rivander. 

 " " 4. Frobes, Mairan, and Acad. Coll. 



" Mar. 20. Zurich. Wolf. 



1571. Mar. 12. Kirch, Mairan, and Acad. Coll. 



" " 13. Kirch, Mairan, and Acad. Coll. 



" " 14. Schmidt, Lehmann, and Frobes. 



1 Phil. Trans. No. 347. Vol. XXIX., p. 417. 



2 Annals of Philosophy, IV. 427. 

 8 Me'm. de l'Acad. 1721, p. 242. 



4 Mairan gives this erroneously as Jan. 6, 1560. 



6 Mense Decembri late per Germaniam ante solis ortum ignis 

 fulsit adeo, ut plurimi ex oppidis et villis auxilio vicinis suis un- 

 dique occurrcrent, quod eorum domos conflagrare arbitrarentur. 

 Boguslawski. Pogg. Ann. Erganzungsband IV. nach Band XC. 



6 Vierteljahr. Zurich, I. 196. 



' Rivander. In Chron. Dierum Festorum II. 5. 



8 De Prodigiosa Specie Utraque Cometae, &c, p. 42. 



9 A General Chronicle of England, p. 658. 

 1° Calend. ad annos 15S8 et 1589. 



11 Proefat. Observationum de Lumine Boreali. 



12 Mcteorologia. 



