We can answer both these questions. As to the first, a large number of Babylonian documents on tablets, preserved in the British Museum, have been published by Father Strassmaier, and discussed by Prof. Schiaparelli. In all there were 2,764 dated documents available for examination, nearly all of them commercial and civil deeds, and covering practically the whole period from the accession of Nebuchadnezzar to the twenty-third year of Darius Hystaspes. This number would give an average of 94 deeds for each day of the month; the number actually found for the four "sabbaths," _i. e._ for the 7th, 14th, 21st and 28th days, were 100, 98, 121 and 91 respectively. The Babylonians evidently did not keep these days as days of rest, or of abstinence from business, as the Jews keep their sabbath, or Christian countries their Sunday. They cannot even have regarded it as an unlucky day, since we find the average of contracts is rather higher for a "sabbath" than for a common day. The case is a little different with the 19th day of the month. This, as the 49th day from the beginning of the previous month, was a sabbath of sabbaths, at the end of a "week of weeks." In this case only 89 contracts are found, which is slightly below the average, though twelve common days show a lower record still. But in most cases the date is written, not as 19, but as 20-1; as if there were a superstition about the number 19. On the other hand, this method of indicating the number may be nothing more than a mode of writing; just as in our Roman numerals, XIX., one less than XX., is written for 19. The Babylonians, therefore, did not observe these days as days of rest, though they seem to have marked them in the ritual of temple and court. Nor did they make every seventh or every fifth a rest-day, for Prof. Schiaparelli has specially examined these documents to see if they gave any evidence of abstention from business either on one day in seven or on one day in five, and in both cases with a purely negative result.