(_b_) _Escheat_, it has been said, "signifies the return of an estate to a lord, either on failure of issue from the tenant or upon account of such tenant’s felony."[87] This lucid description conveys a good general conception of escheat; but it is inaccurate in at least two respects. It does not exhaust the occasions on which escheat occurs, and it errs in speaking of “the return” of an estate to a lord, when, more accurately, that estate had never left him, but always remained his property, subject only to a burden, which was now removed. In theory, the feudal grant of lands was always conditional; and when the condition was broken, the grant fell, and the lord found himself, automatically as it were, once more the absolute unburdened proprietor, as he had been before the grant was made. Thereafter, he held the land in demesne, unless he chose to make a new grant to another tenant. The word “escheat” was applied indifferently to the lord’s right to such reversions, and to the actual lands which had thus reverted. In warlike and unsettled times the right was a valuable one, for whole families might become rapidly extinct. When the last tenant left no heir, it was obvious that the original grant had exhausted itself. Similarly, when a landholder was convicted of felony, his blood became, in the phrase of a later day, attainted, and no one could succeed to any estate through him. If a man failed in the ordeal of water provided by the Assize of Clarendon in 1166 for those accused of heinous crimes, his estates also escheated to his lord. It is true that a complication arose when it was of treason that the tenant had been convicted. In that case the king, as the injured party, had prior rights which excluded those of the lord. The lands of traitors were forfeited to the Crown. Even in the case of felony the king had a limited right to the lands during a period which was strictly defined by Magna Carta.[88] ----- Footnote 87: R. Thomson, _Magna Charta_, p. 236. Footnote 88: _Infra_, c. 32. ----- The tenant’s felony and failure of issue were the two main grounds of escheat, but not the only ones; the goods of fugitives from justice and of those who had been formally outlawed also escheated, and Glanvill adds another case,[89] namely, female wards guilty of unchastity (an offence which spoiled the king’s market). Failure to obey a summons to the feudal levy in time of war might also be made a ground of forfeiture.[90] ----- Footnote 89: VII. 17. Footnote 90: Madox, I. 663. -----