SECTION 1. Paragraph sixty-four of Group 2, Class IV, of section eight of the Philippine Tariff Act of nineteen hundred and nine, as amended by Act Numbered Forty-hundred and fifty-three, is hereby further amended to read as follows :
"64. Dyes, dyestuffs, tanbark and tanning extracts, not otherwise provided for:
"(a) Woods, barks, roots, berries, fruits, leaves and other similar natural products, for dyeing or tanning or for the manufacture of extracts therefrom, ten per centum ad valorem.
“(b) Extracts from the same, for dyeing or tanning, and cutch in any form, fifteen per centum ad valorem.
"(c) Cochineal, indigo (natural or synthetic), colors derived from coal, and chemical dye colors not otherwise provided for, thirty per centum ad valorem.
"Provided, That until the thirty-first day of December, nineteen hundred and forty-six, any article classified under clause (a) of this paragraph shall be free of duty upon importation thereof into the Philippines."