SECTION 1. The territory hitherto comprised in the comandancias of Lepanto, Bontoc, and Amburayan, together with the territory lying between the boundaries of Abra, Cagayan, and Bontoc and not hitherto included within the limits of any province organized under the Provincial government Act, is hereby constituted a province, which shall be known as the Province of Lepanto-Bontoc. This province shall be divided into three subprovinces, as follows:
(a) The subprovinee of Lepanto, which shall comprise the territory hitherto included in the comandancia of Lepanto;
(b) The subprovince of Bontoc, which shall comprise the territory hitherto included in the comandancia of Bontoc and that limited by the boundaries of Abra, Cagayan, and Bontoc and not hitherto included within the boundaries of any province organized under the Provincial Government Act;
(c) The subprovince of Amburayan, which shall comprise the territory hitherto included in the comandancia of Amburayan.