CHRONOLOGY. 55 



pened. It is in this fcience that Julius Afri- 

 canus, Euilbius of Cseforea, George Cyncclle, 

 John of Antioch, Denis, Fetau, Clavier, Calvi- 

 fius, Ufiicr, Simibn, John Marfham, and many 

 other learned men, have excelled. It confifls of 

 four principal parts, that form the foundations 

 on which all its learned reiearches reft.. Theie 

 are, 



i. Aftronomic obfervations, and particularly 

 on the eclipfes of the lun and moon, combined 

 with the calculations of mathematic chronology 

 on the different eras and years of different na- 

 tions. 



The tefti monies of credible authors. 



3. Thofe epochs in hiftory which are ib deter- 

 mine! and evident that no one has ever contefled 

 them. 



4. Ancient medals, coins, monuments, and 

 infcriptions. 



We (hall exan.: four principal parts in 



the order tlu-y here (land, and conclude with 

 fome reflections on the uncertainty that flili 

 s, notv. tus, in chrono- 



logical hillory. 



i. It is with great rcafon that the 

 ccliples of the fun and moon, and the alpc\ 



the 



