10. We would only add that (a) it is the duty cast upon the High Court to formulate the substantial question of law involved in the case even at the initial stage; and (b) that in (exceptional) cases, at a later point of time, when the Court exercises its jurisdiction under the proviso to sub-section (5) of Section 100 CPC in formulating the substantial question of law, the opposite party should be put on notice thereon and should be given a fair or proper opportunity to meet the point. Proceeding to hear the appeal without formulating the substantial question of law involved in the appeal is illegal and is an abnegation or abdication of the duty cast on court; and even after the formulation of the substantial question of law, if a fair or proper opportunity is not afforded to the opposite side, it will amount to denial of natural justice. The above parameters within which the High Court has to exercise its jurisdiction under Section 100 CPC should always be borne in mind. We are sorry to state that the above aspects are seldom borne in mind in many cases and second appeals are entertained and/or disposed of, without conforming to the above discipline.