days. The fourth year was denominated Bissextile, or leap year, because the sixth day before the calends, or first of March, was reckoned twice. The Julian year was introduced throughout the Roman empire, and continued in general use till the year 1582. But the true correction was not six hours, but five hours, forty-nine minutes; hence the addition was too great by eleven minutes. This small fraction would amount in one hundred years to three-fourths of a day, and in a thousand years to more than seven days. It had, in fact, amounted, since the Julian correction, in 1582, to more than seven days. Pope Gregory XIII., therefore, again reformed the calendar, first bringing forward the year ten days, by reckoning the 5th of October the 15th, and then prescribing the rule which has gradually been adopted throughout Christendom, except in Russia, and the Greek church generally.
which had for some time become extremely confused, through the unwarrantable liberty which the pontiffs had taken