DISCOVERY OF A MASTODON'S TOOTH AND THE REMAINS OF A BOREAL VEGETATION IN A SWAMP ON STATEN ISLAND, N. Y
Annals of the New York Academy of Sciences
In the 'Moravian Cemetery at New Dorp, Statcn Island, was a swamp, which, until the past summer, was rather a conspicuous feature, by reason of its quaking margin of peat and sedges, with a pool of dark coffee-colored water towards the center. It occupied a depression in the moraine, at a distance of about 1,200 feet from the margin and at an elevation of about IZO feet above tidewater. The superficial area of the swamp was about 3,500 square feet and the pool of water Hlould fill up and
... fill up and overflow in time of rains and become almost or completely dry in. periods of drought. In the recent development of the cemetery it was decided to drain off the water, dig out the mud, and allow the depression to fill up again as a pond. It was during the progress of this work that the discoveries here recorded were made. The surface deposit was found to consist of a fine moss peat and a coarse peat composed of all kinds of swamp vegetation, extending out to the margin of the pool, while below this and forming the bottbm of the pool was a black organic mud, such as may be seen in almost any swamp where decaying vegetation has accumulated. Below this the deposit was a fine sandy silt, distinctly stratified, the layers following the general contour of the depression, thicker towards the middle and thinning out at the edges. The general shape of the depression is roughly pyramidal, with steeper sides on the north and e a t than on the south and west. The deepest part is in the northeast angle, where the entire deposit was about 25 feet in thickness. All this deposit has been taken out and the sides and bottom of the depression are now exposed to view.