CHRONOLOGY. 51 



ns, whofc hiftory is known to us, with their 

 dates, in a regular ferics ; but alto to reduce all 

 rhdc events either. to the Chiiltian era, or that of 

 the creation of the world To facilitate this bu- 

 finefs, the celebrated Jofeph Si aliger has con- 



J a particular method, which we fhall pre- 

 fentiy explain. 



XXIII. The cycle of the fun is a revolution of 

 , at the end of which, the letters that maik 



the Sundays and other iealli return in the lane 

 order.in which they were in a former year. This 

 revolution is pe, formed in 28 years. The fun 

 has no particular relation to this period, and it is 

 only io called becaufc the letcer of Sunday is 

 principally fought after. Chronology furniihes 

 rules ali ig the Sunday or Dominical 



letter^ and conkq^uJ/ i the other i 



of th 



XXIV. The cycle cf tie me en is a revolution 

 of \<) years-, at the end of which, the new and 

 full moon fall on th" fame day of the Julian ;, 

 This mahnd was invented by Mcton the Athe- 

 nian, who iini oblcrvrd, that after this term the 

 lunations were the l Hut this lunar cycle 

 will not hold true for longer than 311 > 



fuco ; i hat Ihows the 



when the lun.ir cycle 1 :!cd the goldtn 



number. 



D 2 



