The power to grant an extension of time under Ord. LXIV., r. 7 of the Supreme Court Rules 1884 is discretionary; but where such extension is asked for to enable an appeal from a final judgment it will not be granted, unless under very special circumstances and upon very special grounds, such as an act done by the respondent raising an equity against him, or by the appellant within the prescribed time giving unmistakable though informal notice of an intended appeal.