Any board of aldermen, board of town or county commissioners or any person interested in any proceeding, investigation, hearing or trial before such board, may take the depositions of all persons whose evidence may be desired for use in said proceeding, investigation, hearing or trial; and to do so, the chairman of such board or such person may apply in person or by attorney to the superior court clerk of that county in which such proceeding, investigation, hearing or trial is pending, for a commission to take the same, and said clerk, upon such application, shall issue such commission, or such deposition may be taken by a notary public of this State or of any other state or foreign country without a commission issuing from the court; and the notice and proceedings upon the taking of said depositions shall be the same as provided for in civil actions; and if the person upon whom the notice of the taking of such deposition is to be served is absent from or cannot after due diligence be found within this State, but can be found within the county in which the deposition is to be taken, then, and in that case, said notice shall be personally served on such person by the commissioner appointed to take such deposition or by the notary taking such deposition, as the case may be; and when any such deposition is returned to the clerk it shall be opened and passed upon by him and delivered to such board, and the reading and using of such deposition shall conform to the rules of the superior court. (1889, c. 151; Rev., s. 1653; C.S., s. 1814; 1943, c. 543.)