Wishing, therefore, in addition to the witnesses which I already had, to obtain proof of these facts by evidence given under tortureSlaves could give evidence only under torture.—in order that the veracity of my witnesses might be tested before, and not after, they gave their evidence, and so your belief in them might be confirmedIf the slaves confirmed the evidence of his witnesses, the latter would come forward to give evidence in court with a presumption already established that the evidence which they were going to give was true.—I demanded that our opponents should surrender the male and female slaves to be put to the question on these points and any others of which they had cognizance.