An application for leave to appeal to the Supreme Court is a fresh proceeding distinct from the appeal itself, not a continuation of the appeal. The court becomes functus officio once judgment on the appeal is rendered. In criminal matters, an appellant must be properly before the court to institute an application for leave to appeal, and this requires the appellant's presence, particularly where the appellant's status has changed following dismissal of the appeal and automatic termination of bail. The court has inherent power to regulate its own proceedings to ensure procedural propriety in criminal appeals.