576 



collision of Mars with a large comel in 1315 or 1316, lhal ihc 

 comet was thereby brokcn into Ihrcc parls, whose or bits (it 

 may be presumed) received evcn then their present form; viz., 

 that still presented by the comels of 1812, 1815 and 18i6, which 

 arc lragments of ihe dissevcrcd comet.« 



3 (©. 559.) 2apUce, Expos, du Syst. du Monde (ed. 

 1824) p. 414. 



4 (@. 559.) lieber Kometen im 9?aturgemäl&e f. Äoöntoä 

 33b. 1. @. 105—120 unb 389—393 2lnm. 12-27. 



h (©. 560) 3n fteben falben 3al)rl)ttnberten »on 1500 biä 

 1850 finb jufammen 52; einjeln tu ber D?eil)enfoIge von fieben glet= 

 djen Venoben: 13, 10, 2, 10, 4, 4 unb 9, bem bloßen Slttge 

 ftdjtbare (Someten in (Suropa erfdjtenen. Ji?ter folgen bie eiu-- 

 jelnen 3al)re: 



1500—1550 



13 Som. 

 1600—1650 



1607 



1618 



2 (Sollt. 



4 (So tu. 



1550-1600 



10 Som. 

 1650 — 1700 



1652 



1664 



1665 



1668 



1672 



1680 



1682 



1686 



1689 



1696 



4 <5om. 



1800 — 1850 

 1807 

 1811 



