Astronomical and Nautical Collections* 457 



Egyptian year 

 ofJNabonasiiar. 



tus : the bissextile having been introduced at the time of the 

 taking of Alexandria by that emperor. See 1112. 



The 1 Thoth 723 was g,-24y-205.2^ 



= ^-25y+ 160.0*. 



This is about 27 days before the autumnal equinox. It has 

 been generally admitted that the 1 Thoth of this year was the 

 29th of August. The words of Heraclius are, " the Alexan- 

 drians call the first month Thoth, which is September, compre- 

 hending three days of August :" and the 29th would give but 

 two days of August, and would make the autumnal equinox 

 the 25th or 26th of September. The calendar of the stars 

 attributed to Ptolemy (Halma, v. 3, p. 21.), has, indeed, an 

 interpolation of a Roman, after the 1 Thoth, " according to 

 our date, the 29th of August :" and the autumnal equinox is 

 marked on the 28 Thoth : the vernal the 26th of Phamenoth ; 

 the summer solstice the 1 Epiphi; the winter the 26th Choeac: 

 agreeing sufficiently well with the reduction from Ptolemy ; 

 for 205 days from the 1 Thoth give us the 26th of Phamenoth. ~ 

 Logothetes, and the other later chronological fragments. pub- 

 lished by Halma, agree in making the 29th August the 1st of 

 Thoth. 

 840, Tybi (V.) 2. (p. 170, B. vol. 2, p. 22, H.) Agrippa relates 

 that he observed in Bithynia, in the 12th year of Domitian, 

 ^''' the 7th of *' their month Metroiis," an occultation of the 

 ' ' ' southern following part of the Pleiades ; whence the true 

 place of the moon is made 3° 7' y , the date being the 840th 

 year of Nabonassar, 2 Tybi, Qf\ apparent time, 6j^. correct 

 time. ^+93y-112.23^ 



^ The 1st of Domitian was therefore 829 N. 



'845, Mechir (VI.) 15, (p. 170, B. vol. 2, p. 2,5, H.) The first 

 year of Trajan, the 15-16 Mechir, the moon occulted Spica 

 5 equinoctial hours after midnight, or 6^ hours in Alexandria ; 

 that is, about 6\^. mean time, ^ + 98y - 69 . 97*. 



845, Mechir (VI.) 18, (p. 171, B. vol. 2, p. 27, H.) The first 

 year of Trajan, Mechir 18-19, &". 10"". after midnight at 

 Rome, 7**. 30"". at Alexandria, Menelaus observed the south- 

 ern horn of the moon in a line with the middle and the south- 

 ernmost star in the forehead of the scorpion, her centre being 

 as much behind the middle star as this was behind the south- 

 ernmost. @ -f9Sy- 66. 92* 



872, Pachon (TX.) 17, (p. 102, B. p. 267, 268, H.) The " 8th" 

 year of Adrian, the 17-18 of Pachon, the moon was eclipsed 

 \ of her diameter on the southern limb : the interval was 87 1^. 

 256*. 8*». 24"™. apparently, or correctly 5*". 



$+125y+15.17*. 



Halma says very truly 9 Adrian. See 719. 



