Section 39. If a mortgagee or an owner of land causes a notice, designating a place in the town where such land lies at which all papers relative to taxes on such land which are to be served on him may be left, to be recorded in January of any year in the office of the clerk of such town and, during said month, to be delivered to the collector thereof, the collector shall serve at such place any notice, demand for payment or other paper relating to the taxes on such land which is to be served by him. The collector shall not advertise the sale of such land for two months after the time of a demand so made.