Myotherwisepersonalrightisthustransmutedintoarealright，accordingtowhichImaytakeandvindicatetheobjectasminewhereverImayfindit，withoutbeingresponsibleforthewayinwhichtheSellerhadcomeintopossessionofit。
Itisthereforeonlyinbehoofoftherequirementsofjuridicaldecisioninacourt（infavoremjustitaedistributivae）thattherightinrespectofathingisregarded，notaspersonal，whichitisinitself，butasreal，becauseitcanthusbemosteasilyandcertainlyadjudged;anditisthusacceptedanddealtwithaccordingtoapureprincipleapriori。Uponthisprinciple，variousstatutorylawscometobefoundedwhichspeciallyaimatlayingdowntheconditionsunderwhichaloneamodeofacquisitionshallbelegitimate，sothatthejudgemaybeabletoassigneveryonehisownaseasilyandcertainlyaspossible。Thus，inthebrocard，\"Purchasebreakshire，\"whatbythenatureofthesubjectisarealright—namelythehire—istakentoholdasamerelypersonalright;
and，conversely，asinthecasereferredtoabove，whatisinitselfmerelyapersonalrightisheldtobevalidasarealright。Andthisisdoneonlywhenthequestionarisesastotheprinciplesbywhichacourtofjusticeinthecivilstateistobeguided，inordertoproceedwithallpossiblesafetyindeliveringjudgementontherightsofindividuals。
40。IV。AcquisitionofSecuritybytheTakingofanOath。
（CautioJuratoria）。