Section 2. Every recall petition must contain a general statement, in not more than two hundred words, of the grounds of such demand, and must be filed in the office in which petitions for nominations to the office held by the incumbent are required to be filed. The signatures to such recall petition need not all be on one sheet of paper, but each signer must add to his signature the date of his signing said petition, and his place of residence, giving his street and number, if any, should he reside in a town or city. One of the signers of each sheet of such petition, or the person circulating such sheet, must make and subscribe an oath on said sheet, that the signatures thereon are genuine.