Section 1. Section four hundred and thirty-one of Act Numbered Twenty-seven hundred and eleven, known as the Administrative Code, as amended, is hereby further amended to read as follows:
"Section 431. Qualifications prescribed for voters.-Every male or female person who is not a citizen or subject of a foreign power, twenty-one years of age or over, who shall have been a resident of the Philippines for one year and of the municipality in which he shall offer to vote for six months next preceding the day of voting is entitled to vote in all elections if comprised within either of the following three classes:
"(a) Those who, under the laws in force in the Philippine Islands upon the twenty-eighth day of August, nineteen hundred and sixteen, were legal voters and had exercised the right of suffrage.
"(b) Male persons who own real property to the value of five hundred pesos, declared in their name for taxation purposes for a period of not less than one year prior to the date of the election, or who annually pay thirty pesos or more of the established taxes.
"(c) Those who are able to read and write either Spanish, or English, or a native language."