Sea-faring persons before the mast are divided into three classes,--able seamen, ordinary seamen, and boys or green hands. And it may be remarked here that all green hands in the merchant service are termed _boys_, and rated as such, whatever may be their age or size. In the United States navy, an able seaman receives twelve dollars per month, an ordinary seaman ten, and the boys, or green hands, from four to eight, according to their strength and experience. In the merchant service, wages are about the same on long voyages; but on voyages to Europe, the West Indies, and the southern ports, they are considerably higher, and very fluctuating. Still, the same proportion between the classes is preserved, an ordinary seaman getting about two dollars less than an able seaman, and the boys, from nothing up to two dollars less than ordinary seamen, according to circumstances. A full-grown man must ship for boy's wages upon his first voyage. It is not unusual to see a man receiving boy's wages and rated as a boy, who is older and larger than many of the able seamen. The crews are not rated by the officers after they get to sea, but, both in the merchant service and in the navy, each man rates himself when he ships. The shipping articles, in the merchant service, are prepared for so many of each class, and a man puts his name down and contracts for the wages and duty of a seaman, ordinary seaman, or boy, at his pleasure. Notwithstanding this license, there are very few instances of its being abused; for every man knows that if he is found incompetent to perform the duty he contracts for, his wages can not only be reduced to the grade for which he is fitted, but that something additional will be deducted for the deception practised upon all concerned, and for the loss of service and the numerous difficulties incurred, in case the fraud is not discovered until the vessel has got to sea. But, still more than this, the rest of the crew consider it a fraud upon themselves; as they are thus deprived of a man of the class the vessel required, which makes her short-handed for the voyage, and increases the duty put upon themselves. If, for instance, the articles provide for six able seamen, the men expect as many, and if one of the six turns out not to be a seaman, and is put upon inferior work, the duties which would commonly be done by seamen will fall upon the five. The difficulty is felt still more in the watches; as, in the case I have supposed, there would be in one watch only two able seamen instead of three, and if the delinquent was not a capable helmsman, the increased duty at the wheel alone would be, of itself, a serious evil. The officers also feel at liberty to punish a man who has so imposed upon all hands, and accordingly every kind of inferior and disagreeable duty is put upon him; and, as he finds no sympathy from the crew, his situation on board is made very unpleasant. Indeed, there is nothing a