Throughout the day, sailing down the outer edge of the Gulf Stream, we see vessels of all forms and sizes, coming in sight and passing away, as in a dioramic show. There is a heavy cotton droger from the Gulf, of 1200 tons burden, under a cloud of sail, pressing on to the northern seas of New England or Old England. Here comes a saucy little Baltimore brig, close-hauled and leaning over to it; and there, half down in the horizon, is a pile of white...