In the town of _Salisbury_, Massachusetts, a series of heaps thirteen in all, quite near together, consisted exclusively of the shell of the clam. They are about a mile from the left bank of the Merrimack River, near its mouth, and surrounded by a series of sand-downs, some wooded, others naked; these last constantly changing from the action of the wind. They vary in size from about twenty to more than one hundred feet in diameter, but the shells form a layer of only a few inches, and are largely mixed with sand. After a careful search, in company with Mr. Alfred Osgood, of Newburyport, we failed to find in most of them any of the works of man, except only a few flakes or “chips” of flint; but on two, both near together, large quantities of chips were scattered over the surface, and more than five pounds were picked up. Besides these, several arrow-heads and fragments of pots, made of burned clay mixed with coarse sand, were found. No bones of animals, which might have served for food, were noticed, though carefully looked for. In previous years, large numbers of stone implements of various kinds have been carried away; but as the place is in the neighborhood of a large town, and is frequently visited by those in search of such relics, they are now nearly exhausted. VI. _Cotuit Port_ is in the town of Barnstable, on the south side of Cape Cod, and on the northern shore of a narrow bay. It is quite near to the sea, but protected from it by a narrow spit of land, which forms a natural breakwater across the bay at its mouth. Within the distance of a few miles, a large number of shell-heaps are met with, and have been estimated to cover hundreds of acres, sometimes having a thickness of between one and two feet, and at others of only a few inches. Oysters were formerly found in the bay in much larger quantities than at present, and doubtless formed one of the chief attractions which drew the Indians to this place. Our examinations were confined chiefly to one of the larger deposits, about a mile to the eastward of the village, situated on a sloping surface with a pleasant southerly exposure. Excavations by four persons during a whole day were made near the shore, and at various points inland, and brought to light the shells of the oyster, clam, scallop, and quahog, in large numbers, but quite unequally distributed; the clam being plentiful in some places, the quahog in others, and the scallop in others, while the oyster abounded everywhere.