their verdict but would be bound to amend it by careful examination. If he is unable  to disestablish1 it, recourse must be had to better counsel. There is an oath tendered  by one party to the other in court, or by the judge to a party, upon which no conviction  follows, for it is sufficient that they await the vengeance of God.2 On the  question of damages, where the jurors assess a disseisor too little in damages, no  conviction but a certification lies, in which they may certify the judges as to the  matters upon which they based their assessment. Such oath is put by the judge to  the jurors as though they had said something doubtful or obscure.
Who may take a conviction or certification.
 We must also see for whom the plaint on a conviction lies. It is clear that it lies for  him for whom the assise lies, that is, he who was in seisin in his own name, not in  another's, as a procurator or a household. It also lies for him against whom the assise  is brought. We must see who may take a conviction or certification. It is clear that it  is he who took the assise, unless he is held suspect for some reason,3 because he  best knows the truth, and even without another writ, since he has the power to  determine the matter, because the full power of judging, in one assise as in several,  belongs to a judge unless some special exception is made in the writ which serves as  his warrant, 4because though a case is delegated to a person simply, everything  necessary for its decision is taken to be granted him.5 Since, therefore, conviction and  certification are accessories to the assise, and it cannot be finally determined without  conviction or certification, it will be proper for him to whom full jurisdiction for  taking the assise belongs to take the conviction or certification. We must see within  what time it must be taken. It is clear that it must be taken immediately after the  taking of the assise by him who took it, otherwise the judgment of the assise will  pass over into res judicata,6 so that it cannot be taken later without a special order  from the lord king. Also where it ought to be taken, in the county, as ought to be  done of assises,7 or outside it. It is clear that at the will of the lord king or the justices,  either in the county or outside it, wherever the assise is taken,8 since it is an accessory  of the assise, like certification. And if Magna Carta is alleged, that assises ought  not to be taken outside the county,9 it does not follow therefrom that juries are  always to be taken in the county. For the assise has one rule and the jury another.  The writ for summoning the twenty-four for convicting the twelve is this: