In Scotch Law. A petition in writing, by which a party to a cause applies to the supreme court to call the action out of the inferior court to itself. BILL IN AID OF EXECUTIOΝ. Α bill to execute a decree is a bill assuming as its basis the principle of the deeree and seek- ing merely to carry it into effect. (1) For example, such a bill may be filed where an omission has been made in consequence of all the facts not being distinctly on record, or where, owing to the neglect of parties to proceed under a decree, their rights have become embarrassed by subsequent events, and a new decree is necessary to ascertain them (Mitf. 95); or where a decree has been made by an inferior court of equity, the juris- diction of which is not equal to enforce it. The distinguishing feature of a bill of this class is, that it must carry out the principle of the former decree. It must take that principle as its basis, and must seek merely to supply omissions in the decree or pro- ceedings, so as to enable the court to give effect to its decision. A supplemental bill may be filed as well after as before a decree; and if after, may be either in aid of a decree, that it may be carried into full execution, or that proper directions may be given upon some matters omitted in the original bill or not put in issue by it on the defence made to it: Adams, Doctrine of Equity 415; 3 Md. Ch. 306; 4 Baxt. 479. Bills to carry decrees into execution. Sometimes, from the neglect of parties, or some other cause, it becomes impossible to carry a decree into execution without the further decree of the court. This happens generally in cases, where the parties having neglected to proceed upon the decree, their rights under it become so embarrassed by a variety of subsequent events, that it is necessary to have the decree of the court to settle and ascertain them. Sometimes such a bill is exhibited by a person who was not a party; or who does not claim under any party to the original decree; but who claims in a similar interest; or who is unable to obtain the determination of his own rights, till the decree is carried into execution. Or it may be brought by or against any person, claiming as assignee of a party to the decree, Story, Equ. Pleadings § 429, Mitf. Eq. PL. by Jeremy, 95; Cooper, Eq. Pl. 98, 99.