By an act of Congress, the appointment of a person who has served in any capacity in the military or naval service of the so-called Confederate States is prohibited, and, as a general rule, no person will be appointed who has had a brother educated at the Academy. By provision of law, each Congressional and Territorial District and the District of Columbia is entitled to have one Cadet at the Military Academy, and no more. In addition to these, the appointment _annually_ of a number, not exceeding _ten_, "at large," not confined to a selection by Congressional Districts, is authorized. The District and Territorial appointments are made upon the nomination of the member of Congress or Delegate representing the District or Territory at the date of appointment, and the law requires that the individual selected shall be an _actual resident_ of the District or Territory, or District of Columbia, from which the appointment purports to be made. The selections "at large" and from the District of Columbia are made by the President. Appointments are required by law to be made one year in advance of the date of admission--that is to say, about the 1st of July in each year, except in instances where it may be impracticable, from any cause, so to make them. Persons, therefore, receiving appointments have ample time afforded them in which to prepare for a successful examination prior to their admission. II.--To prevent the disappointment, mortification, and useless expense that might attend the acceptance of a Cadet appointment by a person not possessing the necessary qualifications for admission, and for the instruction and aid of others, the following information is communicated: Candidates must be over seventeen and under twenty-two years of age at the time of entrance into the Military Academy; no modification of the law in this respect can be made; but any person who has served honorably and faithfully not less than one year as an officer or enlisted man in the army of the United States, either as a Volunteer, or in the Regular service, during the war for the suppression of the Rebellion, shall be eligible for appointment up to the age of twenty-four years. They must be at least five feet in height, and free from any deformity, disease, or infirmity, which would render them unfit for the military service, and from any disorder of an infectious or immoral character. They must be able to read and write well, and perform with facility and accuracy the various operations of the four ground rules of Arithmetic, of reduction, of simple and compound proportion, and of vulgar and decimal fractions. The Arithmetic is to be studied understandingly, and not merely committed to memory. They will also be required to have a knowledge of the elements of English Grammar, of Descriptive Geography, particularly of our own country, and of the history of the United States.