479. In a more restricted sense, a stranger who, on the death of the ancestor, enters on the land, oalawral: ly, before the heir can enter. 7 . INTRUSION. A species of injury by ouster or amotion of possession from the freehold, being an entry of a stranger, after A particular estate of freehold is determined; before him in remainder or reversion. Hu= lick v. Scovil, 8 Ill. 170; Boylan v. Deinzer, 45 N. J. Eq. 485, 18 Atl. 121.