402 FEFmUSON'S LECTORBS. 



&in from node. 



LECT. . o 



XH. /-September 8 12 22 49 



\ ) 11 days 11 25 29 



1 7 hours 18 11 



C 40 minutes 1 44 



Sun's distance from the ascending node 5 24 12 28 



Which being subtracted from 6 signs, leaves only 5 

 47' 32" remaining ; and this being all the space that the 

 sun is short of the descending node, it is plain that the 

 moon must then be eclipsed, because she is just as near 

 the contrary node. 



EXAMPLE VI. 



}. Whether the sun was eclipsed in May, the year before 

 CHRIST, 585 ? (See Example III.) 



Sun from node. 



o 



To the year before Christ 600 .. . 9 9 23 51 

 Add the mean motion of 15 complete 



And 



Sun's distance from the ascending 



node 3 44 43 



Which being less than 18 degrees, shews that the 

 sun was eclipsed at that time. 



This eclipse was foretold by Thales, and is thought to 

 be the eclipse which put an end to the war between the 

 Medes and Lydians. 



The times of the sun's conjunction with the nodes, and 

 consequently the eclipse -months of any given year, are 

 easily found by the Table of the sun's mean motion from 



