Section 9
SEC. 9. The sergeants, roundsmen, and patrolmen provided for by this Act are hereby divided info three classes. Those of the first class shall have a thorough knowledge of the English language and be familiar with the duties of a policeman; those of the second class shall have acquired a sufficient knowledge of the English language to transact ordinary business; those of the third class shall consist of those who do not speak the English language, but speak, read, and write the Spanish language. A second-class sergeant, roundsman, or patrolman shall be paid twenty-five per cent more than those of the third class, and whenever any sergeant, roundsman, or patrolman of the latter class shall have acquired a fair knowledge of the English language and is otherwise competent, he may be promoted by the Chief of Police to a position in the second class.