[FLORENTINUS libro primo institutionum. ] §34.4.14.prLegata inutiliter data ademptione non confirmantur, ueluti si domino herede instituto, seruo pure legatum sub condicione adimatur: nam pure legatum si sub condicione adimatur, sub contraria condicione datum intellegitur et ideo confirmatur.
[FLORENTINUS in the first book of Institutes.] Legacies invalidly given are not confirmed by a revocation, as for example if, a master having been instituted heir, a legacy given unconditionally to his slave is revoked under a condition; for if an unconditional legacy is revoked under a condition, it is understood to be given under the contrary condition and is therefore confirmed.
ademptio autem, quo minus, non quo magis legatum debeatur, interuenit.
A revocation, however, intervenes so that a legacy should be less due, not more due.
§34.4.14.1Quibus ex causis datio legati inutilis est, ex isdem causis etiam ademptio inefficax habetur, ueluti si uiam pro parte adimas aut pro parte liberum esse uetes.
For the same reasons for which the giving of a legacy is invalid, for those same reasons also a revocation is held to be ineffective, as for example if you should revoke a right of way in part, or forbid [a slave] to be free in part.