_June_ 5,1843.--Towed by the steamer Hercules, we go down the harbor of New York, at 7 o'clock A.M. It is the fourth time the ship has moved, since she was launched from the Navy Yard at Portsmouth. Her first experience of the ocean was a rough one; she was caught in a wintry gale from the north-east, dismasted, and towed back into Portsmouth harbor, within three days after her departure. The second move brought us to New York; the third, from the Navy Yard into the North river; and the fourth will probably bring us to an anchorage off Sandy Hook. After a hard winter of four months, in New Hampshire, we go to broil on the coast of Africa, with ice enough in our blood to keep us comfortably cool for six months at least. At 10 A.M. the steamer cast off, and we anchored inside of Sandy Hook; at 12 Meridian, hoisted the broad pennant of Commodore Perry, and saluted it with thirteen guns. At 3 P.M. the ship gets under way, and with a good breeze, stands out to sea. Our parting letters are confided to the Pilot. That weather-beaten veteran gives you a cordial shake with his broad, hard hand, wishes you a prosperous cruise, and goes over the side. His life is full of greetings and farewells; the grasp of his hand assures the returning mariner that his weary voyage is over; and when the swift pilot boat hauls her wind, and leaves you to go on your course alone, you feel that the last connecting link with home is broken. On our ship's deck, there were perhaps some heart-aches, but no whimpering. Few strain their eyes to catch parting glimpses of the receding highlands; it is only the green ones who do that. The Old Salt seeks more substantial solace in his dinner. It is matter of speculation, moreover, whether much of the misery of parting does not, with those unaccustomed to the sea, originate in the disturbed state of their stomachs. 7.--We are in the Gulf-stream. The temperature of the water is ten degrees above that of the air. Though the ship is deep, being filled with stores, and therefore sailing heavily, we are yet taken along eleven knots by the wind, and two or three more by the current. Swiftly as we fly, however, we are not quite alone upon the waters. Mother Carey's chickens follow us continually, dipping into the white foam of our track, to seize the food which our keel turns up for them out of the ocean depths. Mysterious is the way of this little wanderer over the sea. It is never seen on land; and naturalists have yet to discover where it reposes, and where it hatches its young; unless we adopt the idea of the poets, that it builds its nest upon the turbulent bosom of the deep. It is a sort of nautical sister of the fabled bird of Paradise, which was footless, and never alighted out of the air. Hundreds of miles from shore, in sunshine and in tempest, you may see the Stormy Petrel. Among the unsolvable riddles which nature propounds to mankind, we may reckon the question, Who is Mother Carey, and where does she rear her chickens?