witness shall, as his examination proceeds, be taken down in writing either by t he presiding Judge himself or by his dictation in open Court, or under his direction and superintendence, by an officer of the Court appointed by him in this behalf. 2[(2) Such evidence shall ordinarily be taken down in the form of a narrative, but the pre siding Judge may, in his discretion, take down, or cause to be taken down, any part of such evidence in the form of question and answer.] (3) The evidence so taken down shall be signed by the presiding Judge and shall form part of the record.