AN ACT TO AMEND SECTION SIX OF THIS ACT, ENTITLED "AN ACT TO RAISE REVENUE FOR THE PHILIPPINE ISLANDS, AND FOR OTHER PURPOSES," APPROVED BY THE CONGRESS OF THE UNITED STATES ON AUGUST FIFTH, NINETEEN HUNDRED AND NINE, AS AMENDED BY ACT NUMBERED FORTY HUNDRED AND THIRTY-FOUR OF THE PHILIPPINE LEGISLATURE, BY PROVIDING A METHOD OF CONVERSION BASED ON THE CURRENT RATES OF EXCHANGE