Some of the hymns embodied in them, as well as the incantations and magical ceremonies, were doubtless familiar to the people or derived from current superstitions. The work in which the hymns were collected and procured, and which has been compared with the Veda of India, was at once the Bible and the Prayer-book of Chaldea. The hymns were in Sumerian, which thus became a sacred language, and any mistake in the recitation of them was held to be fatal to the validity of a religious rite. Not only, therefore, were the hymns provided with a Semitic translation, but from time to time directions were added regarding the pronunciation of certain words. The bulk of the hymns was of Sumerian origin, but many new hymns, chiefly in honor of the Sun-god, had been added to them in Semitic times. They were, however, written in the old language of Sumer; like Latin in the Roman Catholic Church, that alone was considered worthy of being used in the service of the gods. It was only the rubric which was allowed to be written in Semitic; the hymns and most of the prayers were in what had come to be termed “the pure” or “sacred language” of the Sumerians. Each hymn is introduced by the words “to be recited,” and ends with _amanû_, or “Amen.” The religious services were incessant. Every day the sacrifice was offered, accompanied by a special ritual, and the festivals and fasts filled up each month of the year. There were services even for the night as well as for the day. The new moons were strictly observed, and the seventh day was one of solemn rest. The very name Sabattu or “Sabbath” was derived by the native etymologists from the Sumerian words _sa_, “heart,” and _bat_, “to end,” because it was “a day of rest for the heart.” Not only were there Sabbaths on the seventh, fourteenth, twenty-first, and twenty-eighth days of the month, there was also a Sabbath on the nineteenth, that being the end of the seventh week from the first day of the previous month. On these Sabbaths no work was permitted to be done. The King, it was laid down, “must not eat flesh cooked at the fire or in the smoke; must not change his clothes; must not put on white garments; must not offer sacrifices; must not drive in his chariot; or issue royal decrees.” Even the prophet was forbidden to practise augury or give medicine to the sick.