comes under attack may decide a collateral fact which is also a jurisdictional fact and assume jurisdiction. Such a finding of fact is not immune from being interfered with by a Writ of Certiorari. As far as the finding of fact which is one within the jurisdiction of the court, it is ordinarily a matter ‘off bounds’ for the writ court. This is for the reason that a body which has jurisdiction to decide the matter has the jurisdiction to decide it correctly or wrongly. It would become a mere error and that too an error of fact. However, gross it may amount to, it does not amount to an error of law. An error of law which becomes vulnerable to judicial scrutiny by way of Certiorari must also one which is apparent on the face of the record. As held by this Court in Hari Vishnu Kamath v. Ahmed Ishaque (AIR 1955 SC 233), as to what constitutes an error apparent on the face of the record, is a matter to be decided by the court on the facts of each case. A finding of fact which is not supported by any evidence would be perverse and in fact would constitute an error of law enabling the writ court to interfere. It is also to be noticed that if the overwhelming weight of the evidence does not support the finding, it would render the decision amendable to certiorari jurisdiction. This would be the same as a finding which is wholly unwarranted by the evidence which is what this Court has laid down M/s. Perry and Co. Ltd. v. P.C. Pal, Judge of the Second Industrial Tribunal, Calcutta and others (AIR 1970 SC 1334)."