79 



labor bestowed upon this earth structure, the particular 

 object of which was undoubtedly of importance to the 

 people who made it, though now it can only be conjectured 

 what that may have been. 



After excavating in numerous localities about Nashville 

 with very successful results, Mr. Putnam visited Green- 

 wood Seminary, near Lebanon, Tenn. Here, by the kind 



FIG. 6. 



attention of Mrs. N. Lawrence Lindsley and other mem- 

 bers of -her family, he was enabled to make his most im- 

 portant and instructive researches. At this place, on the 

 old Lindsley estate, there exists a very perfect earth-work 

 formed by a wall and trench surrounding an area of nearly 

 twelve acres. 



At one place, near Spring creek, there are two cause- 



