CHAPTER IX.--CALENDAR REGULATION. 1. THE INTERCALATION 240
Incomplete series of months--Uncertainty as to the month-- Difficulties in reckoning months--Empirical intercalation-- The Jews--Correction of the months by the stars--Correction of the Batak year--The pre-Mohammedan intercalation--The Babylonian months and the stars.--The Babylonian intercalation empirical--Correction of the year by the solstices and the stars.