406 FERGUSON'S LECTURES. 



(5003 5 32 4710 14 45 8 



[ 408 26 50 37 1 23 58 49 



years J7 _ 3 2 21 39 __ 10 28 40 55 



days 218 16 21 21 48 38 



hours 180 9 8 34 46 44 



minutes 110 5 35 29 



seconds 510 26 0000 



Mean motions 00 45 



And this period is so very near, that in 6000 years it 

 will vary no more from the truth, as to the restitution 

 of eclipses, than 8 minutes of a degree ; which may be 

 reckoned next to nothing. It is the shortest in which, 

 after many trials, I can find so near a conjunction of the 

 sun, moon, and the same node. 



The period. Moon fr. San. Sun fr. node. 

 so to' 



Complete years 18 T 11 59 411 17 46 18 



days 114 14 5 54 11 25 29 



hours 7 3 33 20 18 11 



min. 42 21 20 1 49 



sec. 44 i2 2 



Mean motions 011 29 31 49 



Note by the Authoi. 



