DRODYNAMICS, and TIMEKEEPER.
The next convenient division of time which is marked out by the revolutions of the heavenly bodies is the month. The astronomical month is the tirne in which the moon In the Embolimic year, after the month Adar, the Jews added a month of 30 days, called Ven.idar.
As the French months consist of 30 days each, mak ing in all 360 days, the remaining 5 days are called com plementary days, and sans culotades, the first of which is the 18th September, the second the 19th, the third the 20th, the fourth the 21st, and the fifth the 22d of Sep tember, which terminates the French year.
Each month is divided into three decades, consisting of 10 days each, which are called primidi, duodi, quart guintidi, sextidi, sepadi, octodi, nonodi, and decadi. For an account of the French year, and their method of intercalation, see Section III. On the Year.
As the Grecian months consisted of 30 and 29 days alternately, the former were called ritneEis, full, and hxx Orya,, as ending on the 10th day ; while the latter re ceived the name of xorAor, or hollow, and eva0,veu, or ter minating on the 9th day. They divided each month into three decades of days, (nut a`tx3q.ceen,) which received the following names : First decade was called 1.4nv.g uex0,kEvx, or to-rapuvv. Second, . . . . tA,vvo; AuG-vv-ros.
Third, tAnyo; QPivovroc, axlayroc, vrxvolcits, or Miyovre4.
Hence the days of the month were reckoned in the following manner : 1st day of 1st decade, was called wEsf‘sysa, as falling on the day of new moon, or nom, aexopuvs, or ra-rutivat.
2d day, . . . . horega ,srowEvs.
3d day, . . . And so on with the rest down to the 10th, or Sexccr4