again be taken from under the sign B.1 Since two quarters still remain, let the third  year begin under the same sign B. and let the calculation be made as above.2 Since  one quarter still remains, let the fourth3 year begin under the same sign and, the  calculation made, it will end under the same sign, by reason of the same quarter.  Thus in the same fourth year there will be two periods of six hours, one beginning and  the other ending the year, because of which the year could be called bisextilis.4  Thus the whole period of four years, [calculated] by the number of days, contains  14605 days and one day, which is made up of the four quarters of the four preceding  years and completes the whole period of four years. It is called excrescent and plays  no part in the period of the four following conventional years. Therefore, lest the inconvenience  mentioned above ensue, the excrescent day remaining from the past  period, the first day of the four following years is of necessity pushed back under  the same letter B., and there will be two days under the same sign B.6 Thereafter  let the calculation of the whole period of the four subsequent years be made in the  way aforesaid, and so from period to period ad infinitum.
Of the appearance of the essoinee.
 Therefore the essoinee ought to observe the year and day diligently, lest he appear  earlier or later than he ought. If he appears on an unlawful day and the demandant  on the same day, the tenant will [not] be in default, a protestation having been made  and the record of the constable [produced]. But if the demandant appears on the  lawful day and the tenant earlier, [or] if the demandant appears on the lawful day  and the tenant on the morrow, the tenant will be in default,7 because though the  tenant defaults [as before], the demandant observed his day.8 If on the lawful day  neither demandant nor tenant appears, then both are in default, because they did  not observe the lawful day. Hence if both appear on the morrow, let the defaults  balance one another, because equal offences are nullified by one another.9 If one  appears on the morrow and the other on the third day or the fourth, though they  are not completely in pari delicto and he will here be in default, let a balance be  made as above. If one of them appears on the lawful day at the Tower, and the  other10 before the justices in court, he who appeared in court