1. Naval affairs, quite as much as military, perhaps even more, require the aids of science, and a careful and thorough[310] training. Much of this, indeed, is gained in active service, but for this a basis of scientific study must be laid, and this school of preliminary instruction is called the Naval Academy. As a preliminary even to this, the government has established schools on board of ships, for the instruction of boys in navigation and naval warfare. These are called apprentices; and for good conduct and proficiency in their studies, they are advanced to the Naval Academy, and placed in the line of promotion. 2. This school is now established at Annapolis, in the State of Maryland, near Washington. Like the Military Academy, it has its superintendent and professors. The pupils are called midshipmen. They are taught navigation and such other branches of science as are necessary to make them good seamen and naval officers. They are selected upon nearly the same plan as cadets. Each Congressional District in every State and Territory is entitled to send two students to be educated at the Academy. The District of Columbia is also entitled to send two. Besides which, the President is allowed to appoint ten additional ones at large, a............