ACT 0F LAW. An event which occurs in consequence of some principle of law.
If, for example, land out of which a rent charge has been granted, be
recovered by an elder title, and thereby the rent charge becomes avoided;
yet the grantee, shall have a writ of annuity, because the rent charge is
made void by due course or act of law, it, being a actus legis nemini est
damnosus. 2 Inst. 287.