[Illustration: This chart represents the year 1893-94. Though the year begins about eleven days earlier than the preceding, viz.: the 17th of March, yet it being the year in which a 2d Adar is intercalated, instead of falling back eleven days, the beginning of the following year is carried forward 20 days, making a year of 384 days; so that the year 1894-95 will commence with April 5. In 1891 we commenced with April 9. It will be 19 years before we commence on the 9th of April again.] APPENDIX. A.--PAGE 12. Authors differ in regard to the length of the solar year. One gives 365 days, 5 hours, 47 minutes and 51.5 seconds; another, 365 days, 5 hours, 48 minutes and 46 seconds; and still another, 365 days, 5 hours, 48 minutes and 49.62 seconds. In this work the last has been accepted as the true length of the solar year, and all calculations have been made accordingly. B.--PAGE 19. There is an apparent discrepancy among authors in regard to the intercalary day. While one asserts that it was between the 24th and 25th of February, another equally reliable, says that the 25th was the sexto calendas and the 24th was the bis-sexto calendas of the Julian calendar. Now it should be borne in mind that the Julian calendar is the basis of our own, and is identical with it in the number of months in the year, and in the number of days in the month. Also when the method of numbering the days from the beginning of the month was adopted, the intercalation was made to correspond with the intercalary day in the Julian calendar. As in the Julian calendar there were twice the sixth day, so in the reformed calendar there were twice the 24th day, which was equivalent to 29 days in February. When the calendar was again corrected, making the 29th the intercalary day, then the 24th corresponded with the bis-sexto calendas of the Julian calendar. This reconciles the apparent discrepancy. While one author refers to the calendar in which the Julian rule of intercalation is adopted, another refers to the calendar when so corrected as to make the 29th of February the intercalary day. See following table: