usque ad annum vicesimum quantitas alimentorum triginta annorum computetur eiusque quantitatis Falcidia (Macer: vicesima) praestetur, ab annis vero viginti usque ad annum vicesimum quintum annorum viginti octo, ab annis viginti quinque usque ad annos triginta annorum viginti quinque, ab annis triginta usque ad annos triginta quinque annorum viginti duo, ab annis triginta quinque usque ad annos quadraginta annorum viginti. ab annis quadraginta usque ad annos quinquaginta tot annorum computatio fit, quot aetati eius ad annum sexagesimum deerit remisso uno anno: ab anno vero quinquagesimo usque ad annum quinquagesimum quintum annorum novem, ab annis quinquaginta quinque usque ad annum sexagesimum annorum septem, ab annis sexaginta, cuiuscumque aetatis sit, annorum quinque. eoque nos iure uti Ulpianus ait et circa computationem usus fructus faciendam. solitum est tamen a prima aetate usque ad annum trigesimum computationem annorum triginta fieri, ab annis vero triginta tot annorum computationem inire, quot ad annum sexagesimum deesse videntur. numquam ergo amplius quam triginta annorum computatio initur. sic denique et si rei publicae usus fructus legetur, sive simpliciter sive ad ludos, triginta annorum computatio fit. [Aemilius] Macer, On the Law of Five Per Cent Tax of Estates, Book II. Ulpianus says that the following rule should be adopted in making the estimate of maintenance to be furnished. The amount bequeathed to anyone for this purpose from the first to the twentieth year is computed to have lasted for thirty years, and the Falcidian portion of that sum shall be reserved. From twenty to twenty-five years, the amount is calculated for twenty-eight years, from twenty to thirty years, the amount is calculated for twenty-five years; from thirty to thirty-five years, the amount is calculated for twenty-two years, from thirty to forty years, it is computed for twenty years; from forty to fifty years, the computation is made for as many years as the party lacks of the sixtieth year after having omitted one year; from the fiftieth to the fifty-fifth, the amount is calculated for nine years; from the fifty-fifth to the sixtieth year, it is calculated for seven years; and for any age above sixty, no matter what it may be, the computation is made for five years. Ulpianus also says that we use this same rule in making the calculation with reference to the legacy of an usufruct. Nevertheless, it is the practice for the computation to be made for thirty years from the first to the thirtieth, but