Upon the filing of the declaration of the petitioners and the payment of a fee of three dollars for filing and indexing it, the Secretary of State shall file the declaration under a proper number and index it and shall issue to any two or more of the petitioners a commission constituting them a board of incorporators and authorizing them to open books of subscription to the capital stock of such proposed company, after such public notice, not less than thirty days, as he may require in such commission. Such notice to be published in some newspaper in each of the counties through which the proposed road shall pass and, in the case of steamboat companies, such notice shall be given at the termini only.