M. G. L. Chapter 49, Section 24 requires the field driver to "take up horses, mules, asses, neat cattle, sheep, goats or swine going at large in the public ways, or on common and unimproved land within his town and not under the care of a keeper" and to impound the same. The poundkeeper, who in Freetown is the same officer, is then charged with feeding and providing water to the "beasts" which are in his custody. At the town meeting of March 5, 1923, the town voted to accept Section 28 of Chapter 49, which permits the field driver to impound beasts on his own property.