The course of the land waters in their progress seaward was followed nearly sixty miles beyond the Bar, where currents of considerable velocity were still observed. At the station farthest seaward, where the sounding is thirty fathoms, the observations at different depths disclosed some very remarkable peculiarities. It was perceived that the moving stratum was not always of the same depth; the whole body of the sea moving steadily forward at one time, while at another no motion could be detected below a superficial stream. The land waters, to which allusion has been made, augment the ebb current to such a degree, that a general eastwardly preponderance was observed in the drift along the south shore of Long Island; and this preponderance, increasing steadily from station to station at each remove, was found, at a point twenty-five miles east of Fire Island Light, to outlive the tidal currents and maintain itself as a constant coastwise stream. One very curious discovery was made with regard to this stream along shore. It was ascertained that during easterly gales a portion of the water, crowded up into the bight of the coast, escapes seaward by a sub-current. Shells, carefully marked, were deposited in the sea during fine weather, and, after an easterly gale, were picked up on the shore of Fire Island, _four miles eastward_ of the place of deposit. There was no evidence that these shells travelled any distance during still weather. We do not despair of the possibility of artificial improvements at the Long Island inlets. At present the great inland basins on the southern portion of Long Island communicate with the sea only by narrow passes obstructed by bars and shoals; yet, in spite of the dangers which are always presented, large fleets of market vessels pass out daily through the inlets, laden with farm produce and shell fish. It requires no thought to perceive that if these inlets were made safe and permanent by suitable marine constructions, and were furnished with the proper buoys and beacons, there would spring up in their neighborhood great commercial enterprises.