Mass. Gen. Laws ch. 60 § 80
If no person bids at such a sale or if no bid deemed adequate by the treasurer is made thereat and if the sale has been adjourned one or more times, the treasurer shall then and there make public declaration of the fact, and if no bid or no bid deemed adequate as aforesaid is then made he shall give public notice that he purchases for the town by which the tax is assessed; or if the person to whom the land is sold does not within ten days pay to the treasurer the sum bid by him the sale shall be void and the town shall be deemed to be the purchaser of the land. If the town becomes the purchaser hereunder, the treasurer shall execute to it a deed which shall set forth the fact that no bid or no bid deemed adequate as aforesaid was made at the sale or that the purchaser failed to pay the amount bid, as the case may be. Such deed shall not be valid unless recorded within sixty days after the sale under this section; and the title of the town to land conveyed thereby shall be absolute upon the recording of said deed in the proper registry of deeds within such sixty days.
Mass. Gen. Laws ch. 60, § 80