SECTION 1. Paragraph two hundred and twenty-nine of the Philippine Tariff Act of nineteen hundred and nine, as amended, is hereby further amended to read as follows:
"229. Vegetables, preserved, not otherwise provided for:
"(a) In bulk, gross weight, one hundred kilos, one dollar and twenty-five cents.
"(b) In small or retail packages, including weight of immediate containers, one hundred kilos, one dollar and fifty cents.
"Provided, That no article classified under clause (b) of this paragraph shall pay a less rate of duty than fifteen per centum ad valorem."