At Sea.—I have emerged from my berth this morning for the first time since we left the Capes. We have been running six or seven days before a strong northwest gale, which, by the scuds in the sky, is not yet blown out, and my head and hand, as you will see by my penmanship, are anything but at rights. If you have ever plunged about in a cold rain-storm at sea for seven successive days, you can imagine how I have amused myself.