SKYFFARTH — OX THE THEORY OF THE MOON's MOTIONS. 467 



Dioclet. 80 (a.d. 364), a solar eclipse occurred {yevouei^rjc: auvb- 

 oo'j^ixXcTZTcxr^^ 7'Jjyavo'j<jr^^. The longitude of the U was 

 shorter by 2° 32', and the obscuration commenced about ih. 

 32m. later. 



GS. 1> +364, Nov. 25th, i4h., U 6° E., Alexandria. Theon 

 (Can. vi. p. 90. 162) records that on the 6th day of Phamenoth 

 (Nov. 25th), JS.X. Dioclet. 81 (a.d. 364), a "total eclipse of the 

 moon" was there seen. According to our Table, p. 429, the ft 

 lay 2° 32' nearer to the centre of the earth's shadow, and hence 

 that "total" eclipse was a total one indeed. 



64. O +374? Nov. 19, 22h, 3Dm., ft 2°W., Alexandria, curve 

 7°, — 9°, *. Theon (Can. vi. p. 74 Hal.) reports that a solar 

 eclipse happened in Alexandria during Phamenoth, J£.x. Diocl. 

 90, and in the 3d hour of the day (p.m.) Theon's eclipse, how- 

 ever, was invisible in Alexandria, provided the ft lay not farther 

 from the sun by about 2° 32' (p. 429). The eclipse commenced 

 ih. 32m. later (p. 429), which agrees with Theon. 



Qd. 0+378, Sept. 7th, 23h. 30m. ft 2° W., Alexandria, cur\e 

 25°, 19°, ^. Theon (Can. vi. p. 7^ H.) mentions a solar eclipse 

 belonging to the year 94, J£.x. Diocl. Since the ft lay farther 

 from the sun by 2° 32' , the obscuration was greater in Alexandria 

 (31° 13' N.) 



m. 0+393, Nov. 19, 23h. (-^ih. 29m.), ft io°W. (— 2° 29O 

 Rome or Constantinople, curve ^3°, 40°, 37-45°. Zosimus (Hist, 

 iv. 58, 3) narrates that coss. Theodosius III. and Abundantius, 

 A.D. 393, during the battle of Theodosius against Eugenius, a 

 great eclipse of the sun occurred {tjliou ixhapcv iv ahzw zw 

 -Aaifjuj T7j^ l^^y/j^ a'JveSrj yzi^iadac zoca'jrr^i^ wart i^ijy-a zlvcu 

 yA'/Sf.ov "kill TzXziova "^opx'^s.adat ypbvo'S). Marcellin (Seal. p. 36; 

 ed. Rone. 271) says : "tunc quippe hora diei tertia tenebrae factse 

 sunt." The same is reported by Prosper Aquit. Chron. i. 672. 

 The obscuration in Rome amounted, according to Petavius, to 

 10 inches on the northern side of the solar disc. Since the ft, 

 however, lay nearly 2° 29' farther from the sun, the eclipse was 

 smaller in Rome. The "third" hour probably means the third 

 hour after noon, because the Romans were in the habit, in later 

 times, of counting the hours both from midnight and from noon. 

 (Comp. No. 64.) Hieronymus refers, perhaps, the same eclipse 

 to Pentecost (June), and such a one occurred a.d. 392, June 6th, 



