CHAPTER XIII.--ARTIFICIAL PERIODS OF TIME. FEASTS 324
The market-week in Africa--Greater periods in Africa--The market-week in Asia--America--Rome--_Shabattu_ and sabbath-- Origin of the sabbath--The sabbath a market-day--Festivals and seasons--Cycles of festivals--Regulation of the festivals by the moon--Full moon the time of festivals--Festivals determined by the course of the sun--Months named after festivals.