A more complete examination was made of a second deposit on one of two small islands, neither of which are named, about a mile west of the place just mentioned.[5] This heap is seen on a bank, at a height of about six feet above the high-water mark, varies in thickness from a few inches to about three feet, and extends along the shore about two hundred and fifty feet, and from thirty to forty feet inland. A section through the heap at its thickest part showed that it belonged to two different periods, indicated by two distinct layers of shells. The lowest, a foot in thickness, consisted of the shells of the clam, whelk, and mussel, all much decomposed, and mixed with earth. Above this was a layer of dark vegetable mould, mixed with earth and gravel, and from six to eight inches in thickness. Above this was a second layer of shells, of the same species as those just mentioned, but in a much better state of preservation, and with less intermixture of earth; this deposit was in turn covered by another layer of earth and mould, and these now sustain a growth of forest trees, but none of them of large size. From the state of things just described, it would seem that the place had been reoccupied, after having been once abandoned long enough for a vegetable mould to be formed, and a layer of earth from some neighboring source to be deposited over it. Charcoal was found in considerable quantity, scattered among the shells, and the remains of an old fireplace were uncovered. The bones of animals, and the various kinds of implements (Pl. 14, figs. 3, 4, 5; Pl. 15, figs. 10, 11) obtained during the excavations, will be described in another page. III. _Crouch’s Cove._ This is situated on Goose Island, in Casco Bay, about fifteen miles north-east of Portland. The whole island is at present covered with a growth of spruce trees (_Abies nigra_), excepting a narrow strip on the seaward side, and on this, at the southerly end of the island, are several shell-heaps of different sizes. The longest of these is about one hundred and fifty feet in length, forty in width, and varying in thickness from a few inches to nearly three feet. Considerable portions have been washed away, and the contents scattered along the shore. The shells are mostly deposited evenly, but here and there are raised into small knolls, and all are covered with turf. This deposit has been carefully examined by Mr. C. B. Fuller, of Portland, by whom large collections have been made, and a portion of which were unfortunately destroyed by the great fire of 1866. Mr. Edward S. Morse has more recently made a partial examination, and obtained many valuable specimens, which will be mentioned farther on.