That Act provides that: "(1) Notwithstanding anything contained in Madras General Sales Tax Act, 1939 (Madras Act IX of 1939) (hereinafter referred to as the said Act), or in the rules made thereun der (hereinafter referred to as the said rules), during the period commencing on the 1st April, 1955 and ending on the 31st March, 1959, in respect of sale of dressed hides and skins (which were not subjected to tax under the said Act as raw hides and skins), the tax under the said Act shall be levied from the dealer who in the State is the first seller in such hides and skins not exempt from taxation under sub section (3) of section 3 of the said Act at the rate of two per cent of the amount for which such hides and skins were last purchased in the untanned condition.