230 
Mr. Daily on the Solar Eclipse 
With respect to the eclipse, which happened October ist, 
583 B. C. it is sufficient to observe that, as the ecliptic conjunc- 
tion of the sun and moon did not take place till after four 
o’clock in the afternoon at Greenwich, it is evident that the 
sun must have set, centrally eclipsed, to the westward of any 
meridian line that can be drawn through any part of Asia 
Minor: and consequently the eclipse could not have been 
central in that peninsula. 
Calvisius does not come much nearer the truth, in suppos- 
ing that the eclipse mentioned by Herodotus is the one which 
occurred in 607 B. C. For in that which happened July 30th, 
the ecliptic conjunction took place at 8 h 2 6' 18'' in the morn- 
ing, mean time at Greenwich, or 8 h 35' 43" apparent time : and 
the elements were. as follow: 
True longitude of the luminaries 3 s 2 
6' 
54" 
Sun's declination, north - 20 
38 
39 
semi-diameter 
15 
54 
Moon’s semi-diameter 
1 5 
10 
- - equatorial parallax 
54 
33 
— horary motion from the sun 
27 
41 
■ true latitude, south - 
2 
17 
— — horary motion in latitude 
2 
46 
By a trigonometrical calculation, I find that the sun rose 
centrally eclipsed off the coast of Sierra Leona in N. lat. 8° 13' 
and W. long. 12 0 33'. The moon’s umbra then crossed the 
continent of Africa between the 10th and 20th degrees of 
north latitude : and the sun became centrally eclipsed on the 
meridian in Arabia Felix, in N. lat. i8|° and E. long. 3 0 24k 
It is evident, therefore, that this eclipse (independent of its 
