THE CALCULATION OF ECLIPSES. 401 



I.ECT 

 XII. 



EXAMPLE IV ^,-x 



The moon changes on the '26th of September 1764, at 2 h. 

 2 m. (neglecting the seconds) afternoon. (See Example 

 I.) Qu. Whether the sun will be eclipsed at that time? 



Sun from node, 

 so ' " 



To the year after Christ's birth 1753 1 28 19 

 \dd complete years ... 11 7 2 3 56 



(sum 1764) 



! September 8 12 22 49 



26 days 27 13 



2 hours 5 12 



2 minutes 0005 



Sun's distance from the ascending node . 6 9 32 34 



Now, as the descending node is just opposite to the 

 ascending, (viz. 6 signs distant from it) and the tables 

 shew only how far the sun has gone from the ascend- 

 ing node, which, by this example, appears to be 6 signs 

 9 degrees 32 minutes 34 seconds, it is plain that he must 

 be eclipsed ; being then only 9 32* 34* short of the 

 descending node. 



EXAMPLE V. 



The moon will be full on the llth of September, 1764, at 

 7 h. 40 m. past noon. (See Example II.) Qu. Whether 

 she will be eclipsed at that time ? 



Sun from node. 

 s o 



To the year after Christ's birth 1753 1 28 19 

 Add complete years .... 11 7 2 3 56 



(sum 1764) 

 26. D D 



