Section 34. If there is no person entitled to such notice, the person impounding the beasts shall, within forty-eight hours thereafter, post a like notice in a public place in the town and in a public place in each of any two adjoining towns, if within four miles from the place where the beasts were taken; and if their value exceeds thirty dollars and no person claims them within seven days after the day of impounding, a like notice shall be published three weeks successively in a newspaper, if any, published within twenty miles of the pound, the first publication to be within fifteen days after the day of impounding.