I60 NATURAL HISTORY AND TOPOGRAPHY OF GROTON, MASS. 



the distance and direction to some important town ; and these 

 persons often added their own initials, as well as the year 

 when the stones were placed. 



At the present time there are several mile-stones in Groton 

 which were set up during the eighteenth century. Two of 

 them certainly were placed by Dr. Oliver Prescott, younger 



