Section 11
SEC. 11. Paragraph (c) of Section 153 of the National Internal Revenue Code is hereby amended to read as follows: "(c) Naptha, per liter of volume capacity, fifty centavos; gasoline and all other similar products of distillation, per liter of volume capacity, sixty-two centavos: Provided, That on premium and aviation gasoline the tax shall be. sixty-seven centavos and fifty-five centavos, respectively, per liter of volume capacity;"